sodium;N,N-diethylcarbamodithioate;trihydrate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Benzyl bromide (2.05 g, 12 mmol) in THF (10 mL) was added dropwise over 15 minutes to a supension of sodium N,N-diethyldithiocarbamate trihydrate (2.25 g, 10 mmol) in 25 mL of THF at room temperature. The solution was allowed to stir at room temperature for 3 hours when the solids were filtered off and the filtrate concentrated. The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits) to obtain the title compound (2.25 g, 94%). 1H-nmr (CDCl3) δ 1.3 (6H), 3.7 (2H), 4.1 (2H), 4.6 (2H), 7.3 (5H). were filtered off the filtrate concentrated The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Benzyl bromide (2.05 g, 12 mmol) in THF (10 mL) was added dropwise over 15 minutes to a supension of sodium N,N-diethyldithiocarbamate trihydrate (2.25 g, 10 mmol) in 25 mL of THF at room temperature. The solution was allowed to stir at room temperature for 3 hours when the solids were filtered off and the filtrate concentrated. The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits) to obtain the title compound (2.25 g, 94%). 1H-nmr (CDCl3) δ 1.3 (6H), 3.7 (2H), 4.1 (2H), 4.6 (2H), 7.3 (5H). were filtered off the filtrate concentrated The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Benzyl bromide (2.05 g, 12 mmol) in THF (10 mL) was added dropwise over 15 minutes to a supension of sodium N,N-diethyldithiocarbamate trihydrate (2.25 g, 10 mmol) in 25 mL of THF at room temperature. The solution was allowed to stir at room temperature for 3 hours when the solids were filtered off and the filtrate concentrated. The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits) to obtain the title compound (2.25 g, 94%). 1H-nmr (CDCl3) δ 1.3 (6H), 3.7 (2H), 4.1 (2H), 4.6 (2H), 7.3 (5H). were filtered off the filtrate concentrated The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Benzyl bromide (2.05 g, 12 mmol) in THF (10 mL) was added dropwise over 15 minutes to a supension of sodium N,N-diethyldithiocarbamate trihydrate (2.25 g, 10 mmol) in 25 mL of THF at room temperature. The solution was allowed to stir at room temperature for 3 hours when the solids were filtered off and the filtrate concentrated. The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits) to obtain the title compound (2.25 g, 94%). 1H-nmr (CDCl3) δ 1.3 (6H), 3.7 (2H), 4.1 (2H), 4.6 (2H), 7.3 (5H). were filtered off the filtrate concentrated The crude residue was purified by column chromatography (silica gel, 20% ethyl acetate in petroleum spirits)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 18 g/100 ml of sodium tripolyphosphate was slowly poured into a 57.8 g/300 ml aqueous solution of zinc sulfate heptahydrate while stirring to prepare a suspension of a zinc tripolyphosphate crystalline precipitate. 45.3 g/200 ml of sodium N,N-diethyldithiocarbamate trihydrate was then slowly poured into the suspension, while stirring, to give a crystalline precipitate of zinc mono-(N,N-diethyldithiocarbamate)-triphosphate (hereunder, “G”). to prepare while stirring

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 18 g/100 ml of sodium tripolyphosphate was slowly poured into a 57.8 g/300 ml aqueous solution of zinc sulfate heptahydrate while stirring to prepare a suspension of a zinc tripolyphosphate crystalline precipitate. 45.3 g/200 ml of sodium N,N-diethyldithiocarbamate trihydrate was then slowly poured into the suspension, while stirring, to give a crystalline precipitate of zinc mono-(N,N-diethyldithiocarbamate)-triphosphate (hereunder, “G”). to prepare while stirring

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of sodium diethyldithiocarbamate trihydrate (3.5 g, 1.55×10−2 mol) in 20 mL of ethanol was added to a flask equipped with a stirrer, dropping funnel and a reflux condenser. To this solution was added a solution of 4-vinylbenzyl chloride (3.0 g, 1.96×10−2 mol) and ethanol (5 mL), dropwise, over a period of 0.5 h at a temperature of 0° C. The resultant solution was stirred at room temperature for 24 h before pouring into a large volume of water and extracting with diethyl ether. The ether phase was washed three times with water, dried over sodium sulphate, before finally removing the diethyl ether by evaporation. The residue was recrystallised three times from methanol, giving a yield of 2.6 grams (83%). 1H NMR (CDCl3) δ7.36 (s, 4H, C6H4), 6.70 (dd, J=11.6 and 17.5 Hz, 1H, CH═CH2), 5.73 (d, J=17.5 Hz, 1H, CH═CH2), 5.24 (d, J=11.5 Hz, 1H, CH═CH2), 4.54 (s, 2H, CH2S), 4.04 (q, J=7.3 Hz, 2H, NCH2), 3.73 (q, J=6.6 Hz, 2H NCH2), 1.19 (t, J=ca.7.0 Hz, 6H CH2CH3). equipped with a stirrer extracting with diethyl ether The ether phase was washed three times with water dried over sodium sulphate before finally removing the diethyl ether by evaporation The residue was recrystallised three times from methanol giving a yield of 2.6 grams (83%)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of sodium diethyldithiocarbamate trihydrate (3.5 g, 1.55×10−2 mol) in 20 mL of ethanol was added to a flask equipped with a stirrer, dropping funnel and a reflux condenser. To this solution was added a solution of 4-vinylbenzyl chloride (3.0 g, 1.96×10−2 mol) and ethanol (5 mL), dropwise, over a period of 0.5 h at a temperature of 0° C. The resultant solution was stirred at room temperature for 24 h before pouring into a large volume of water and extracting with diethyl ether. The ether phase was washed three times with water, dried over sodium sulphate, before finally removing the diethyl ether by evaporation. The residue was recrystallised three times from methanol, giving a yield of 2.6 grams (83%). 1H NMR (CDCl3) δ7.36 (s, 4H, C6H4), 6.70 (dd, J=11.6 and 17.5 Hz, 1H, CH═CH2), 5.73 (d, J=17.5 Hz, 1H, CH═CH2), 5.24 (d, J=11.5 Hz, 1H, CH═CH2), 4.54 (s, 2H, CH2S), 4.04 (q, J=7.3 Hz, 2H, NCH2), 3.73 (q, J=6.6 Hz, 2H NCH2), 1.19 (t, J=ca.7.0 Hz, 6H CH2CH3). equipped with a stirrer extracting with diethyl ether The ether phase was washed three times with water dried over sodium sulphate before finally removing the diethyl ether by evaporation The residue was recrystallised three times from methanol giving a yield of 2.6 grams (83%)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of sodium diethyldithiocarbamate trihydrate (3.5 g, 1.55×10−2 mol) in 20 mL of ethanol was added to a flask equipped with a stirrer, dropping funnel and a reflux condenser. To this solution was added a solution of 4-vinylbenzyl chloride (3.0 g, 1.96×10−2 mol) and ethanol (5 mL), dropwise, over a period of 0.5 h at a temperature of 0° C. The resultant solution was stirred at room temperature for 24 h before pouring into a large volume of water and extracting with diethyl ether. The ether phase was washed three times with water, dried over sodium sulphate, before finally removing the diethyl ether by evaporation. The residue was recrystallised three times from methanol, giving a yield of 2.6 grams (83%). 1H NMR (CDCl3) δ7.36 (s, 4H, C6H4), 6.70 (dd, J=11.6 and 17.5 Hz, 1H, CH═CH2), 5.73 (d, J=17.5 Hz, 1H, CH═CH2), 5.24 (d, J=11.5 Hz, 1H, CH═CH2), 4.54 (s, 2H, CH2S), 4.04 (q, J=7.3 Hz, 2H, NCH2), 3.73 (q, J=6.6 Hz, 2H NCH2), 1.19 (t, J=ca.7.0 Hz, 6H CH2CH3). equipped with a stirrer extracting with diethyl ether The ether phase was washed three times with water dried over sodium sulphate before finally removing the diethyl ether by evaporation The residue was recrystallised three times from methanol giving a yield of 2.6 grams (83%)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: More specifically, 10 ml of ethanol solution containing benzyl chloride (4.8 g, 38 mmol, Mw. 126.58) was added dropwise into 50 ml of ethanol solution containing sodium N,N-diethyldithiocarbamate trihydrate (10.3 g, 46 mmol, Mw. 225.31) in nitrogen atmosphere at 0° C. After agitating the reaction solution for 23 hours at room temperature, 150 ml of water was added and extracted by diethylether (200 ml×3 times). The organic layer was washed with water (100 ml×3 times) and was dried by sodium sulfate. Solvent was distilled away under reduced pressure using an evaporator so as to obtain benzyl N,N-diethyldithiocarbamate (colorless liquid). Yield point was 17.6 g (yield: 93%), 1H-NMR: δ7.407 ppm to 7.271 ppm (m, 5H, Ar—H), δ4.540 ppm (s, 2H, Ar—CH2S), δ4.082 ppm to 4.012 ppm (q, 2H, —N—CH2—), δ3.763 ppm to 3.692 ppm (q, 2H, —N—CH2—), δ1.311 to 1.252 ppm (m, 6H, —CH2—CH3). extracted by diethylether (200 ml×3 times) The organic layer was washed with water (100 ml×3 times) was dried by sodium sulfate Solvent was distilled away under reduced pressure an evaporator so as

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of sodium diethyldithiocarbamate trihydrate (3.5 g, 1.55×10−2 mol) in 20 mL of ethanol was added to a flask equipped with a stirrer, dropping funnel and a reflux condenser. To this solution was added a solution of 4-vinylbenzyl chloride (3.0 g, 1.96×10−2 mol) and ethanol (5 mL), dropwise, over a period of 0.5 h at a temperature of 0° C. The resultant solution was stirred at room temperature for 24 h before pouring into a large volume of water and extracting with diethyl ether. The ether phase was washed three times with water, dried over sodium sulphate, before finally removing the diethyl ether by evaporation. The residue was recrystallised three times from methanol, giving a yield of 2.6 grams (83%). 1H NMR (CDCl3) δ7.36 (s, 4H, C6H4), 6.70 (dd, J=11.6 and 17.5 Hz, 1H, CH═CH2), 5.73 (d, J=17.5 Hz, 1H, CH═CH2), 5.24 (d, J=11.5 Hz, 1H, CH═CH2), 4.54 (s, 2H, CH2S), 4.04 (q, J=7.3 Hz, 2H, NCH2), 3.73 (q, J=6.6 Hz, 2H NCH2), 1.19 (t, J=ca. 7.0 Hz, 6H CH2CH3). equipped with a stirrer extracting with diethyl ether The ether phase was washed three times with water dried over sodium sulphate before finally removing the diethyl ether by evaporation The residue was recrystallised three times from methanol giving a yield of 2.6 grams (83%)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To the solution of 3-(benzyloxycarbonylamino)-N-(2-bromoethyl)propionamide (10 g) in acetone (250 ml), sodium diethyldithiocarbamate trihydrate (6.8 g) in acetone (150 ml) is added and the mixture is stirred for 40 minutes at room temperature. The reaction mixture is filterd and the filtrate is concentrated in vacuo. The residue is dissolved in ethyl acetate (150 ml) and the solution is washed with N hydrochloric acid, N sodium hydroxide, water and saturated sodium chloride solution in the named order. The ethyl acetate solution is dried over anhydrous magnesium sulfate and concentrated in vacuo to give 10.7 g (89%) of the titled compound. the filtrate is concentrated in vacuo The residue is dissolved in ethyl acetate (150 ml) the solution is washed with N hydrochloric acid, N sodium hydroxide, water and saturated sodium chloride solution in the named order The ethyl acetate solution is dried over anhydrous magnesium sulfate concentrated in vacuo