1-chloro-3,7,11-trimethyldodeca-2,6,10-triene

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:-30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-Chlorosuccinimide (0.66 g, 4.95 mmol) was dissolved in 20 ml of dry CH2Cl2 under a nitrogen atmosphere. The solution was cooled to -30° C. and 0.37 ml dimethyl sulphide (5 mmol) was added. The mixture was allowed to warm to 0° C. before it was cooled to -40° C. Then farnesol (1 g, 4.5 mmol) dissolved in 2.5 ml CH2 Cl2 was added dropwise to the mixture over a period of 3 minutes. The reaction mixture was warmed to 0.C in 1 h, at which temperature it was maintained for another hour. After 15 minutes of stirring at room temperature the reaction mixture was poured into a separatory funnel which contained 12.5 ml of cold saturated NaCl. The aqueous layer was extracted with two 10 ml portions of pentane. The organic layers were combined with an additional 10 ml of pentane and washed with two 5 ml portions of cold saturated NaCl. The organic layer was dried over MgSO4 and concentrated to dryness in vacuo. Compound (b) was thus obtained in a yield of 89%. to warm to 0° C. before it was cooled to -40° C was added dropwise to the mixture over a period of 3 minutes was maintained for another hour was poured into a separatory funnel which The aqueous layer was extracted with two 10 ml portions of pentane washed with two 5 ml portions of cold saturated NaCl The organic layer was dried over MgSO4 concentrated to dryness in vacuo

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

Procedure: A solution of 37.5 mL (20.3 mmol, 5.1 eq.) of a 0.54M solution of Grignard reagent (Part (2)) in tetrahydrofuran and 9 mL of hexamethylphosphoramide at room temperature under argon was treated over 10 minutes with a solution of 955.5 mg (3.97 mmol) of farnesyl chloride (Part (1)) in 5 mL of tetrahydrofuran. After one hour, the reaction mixture was diluted with a mixture of 1:1 diethyl ether:hexane and quenched with 1M HCl. The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine, dried over MgSO4 and evaporated to obtain 995.0 mg of crude product. Purification required two chromatographies. The first was run on 70 g of silica gel, eluting with 1:99 ethyl acetate:CH2Cl2 to provide 484.3 mg of impure material and 307.7 mg of pure title compound. The second chromatography, of the impure fractions, on 50 g of silica gel eluted with 0.75:99.25 ethyl acetate:CH2Cl2 gave 117.2 mg of slightly impure material and 302.8 mg of pure title compound. Combination of pure material from both columns gave a yield of 610.5 mg (58%) of pure desired title isomer. hexane and quenched with 1M HCl The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine dried over MgSO4 evaporated to obtain 995.0 mg of crude product Purification eluting with 1:99 ethyl acetate

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (Note all temperatures indicated are for the contents of the reaction flask). To a stirred solution of 299 mg (2.24 mmol) of N-chlorosuccinimide in 15 mL of dichloromethane at -30° C. under argon was added 0.18 mL (2.45 mmol) of distilled dimethyl sulfide over 5 minutes. After 10 minutes at -30° C., the reaction was allowed to warm to 0° C. for 10 minutes, followed by cooling to -40° C. A solution of 441.4 mg (1.99 mmol) of 3,7,11-trimethyl-2,6,10-tridecatrien-1-ol in 5 mL of dichloromethane was added dropwise over 10 minutes. The reaction was allowed to warm gradually to 0° C. over 1 hour, and then maintained at 0° C. for 1 hour. After quenching with cold water, the mixture was extracted with hexane and the hexane extract was washed with cold water and cold brine, dried (MgSO4) and evaporated to afford 483 mg of a crude product. Rapid flash chromatography on 20 g of Merck 9385 silica gel eluted with 3:97 ethyl acetate:petroleum ether provided 406.5 mg (85%) of a colorless liquid. 13C NMR indicated that this material contained a trace (3%) impurity. by cooling to -40° C to warm gradually to 0° C. over 1 hour maintained at 0° C. for 1 hour After quenching with cold water the mixture was extracted with hexane the hexane extract was washed with cold water and cold brine dried (MgSO4) evaporated to afford 483 mg of a crude product Rapid flash chromatography on 20 g of Merck 9385 silica gel eluted with 3:97 ethyl acetate

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

Procedure: A solution of 37.5 mL (20.3 mmol, 5.1 eq.) of a 0.54M solution of Grignard reagent (Part B) in tetrahydrofuran and 9 mL of hexamethylphosphoramide at room temperature under argon was treated over 10 minutes with a solution of 955.5 mg (3.97 mmol) of farnesyl chloride (Part A) in 5 mL of tetrahydrofuran. After one hour, the reaction mixture was diluted with a mixture of 1:1 diethyl ether : hexane and quenched with 1M HCl. The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine, dried over MgSO4 and evaporated to obtain 995.0 mg of crude product. Purification required two chromatographies. The first was run on 70 g of silica gel, eluting with 1:99 ethyl acetate:CH2Cl2 to provide 484.3 mg of impure material and 307.7 mg of pure title compound. The second chromatography, of the impure fractions, on 50 g of silica gel eluted with 0.75:99.25 ethyl acetate:CH2Cl2 gave 117.2 mg of slightly impure material and 302.8 mg of pure title compound. Combination of pure material from both columns gave a yield a yield of 610.5 mg (58%) of pure desired title isomer. hexane and quenched with 1M HCl The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine dried over MgSO4 evaporated to obtain 995.0 mg of crude product Purification eluting with 1:99 ethyl acetate

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In 10 m of DMF were poured 1.28 g (7.6 mmol) of methyl 2,4-dihydroxybenzoate and 1.05 g (7.6 mmol) of potassium carbonate, and 1.84 g (7.6 mmol) of farnesyl chloride was added thereto dropwise at room temperature. After the addition, the mixture was stirred at 60° C. for 3 hours and then poured into a 12% hydrochloric acid aqueous solution. Ethyl acetate was poured thereinto to conduct extraction. The resulting extract was washed with water and a saturated sodium chloride aqueous solution, dried over sodium sulfate, and concentrated. The resulting crude product was purified by column chromatography on silica gel to obtain 2.0 g (yield: 71%) of methyl 4-{(2E,6E)-3,7,11-trimethyl-2,6,10-dodecatrienyloxy}-2-hydroxybenzoate represeted by the following structural formula (hereinafter referred to as compound 37) as a colorless, clear and oily substance. The analytical results are shown below. ##STR58## was added dropwise at room temperature After the addition extraction The resulting extract was washed with water a saturated sodium chloride aqueous solution, dried over sodium sulfate concentrated The resulting crude product was purified by column chromatography on silica gel

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In 10 m of DMF were poured 1.28 g (7.6 mmol) of methyl 2,4-dihydroxybenzoate and 1.05 g (7.6 mmol) of potassium carbonate, and 1.84 g (7.6 mmol) of farnesyl chloride was added thereto dropwise at room temperature. After the addition, the mixture was stirred at 60° C. for 3 hours and then poured into a 12% hydrochloric acid aqueous solution. Ethyl acetate was poured thereinto to conduct extraction. The resulting extract was washed with water and a saturated sodium chloride aqueous solution, dried over sodium sulfate, and concentrated. The resulting crude product was purified by column chromatography on silica gel to obtain 2.0 g (yield: 71%) of methyl 4-{(2E,6E)-3,7,11-trimethyl-2,6,10-dodecatrienyloxy}-2-hydroxybenzoate represeted by the following structural formula (hereinafter referred to as compound 37) as a colorless, clear and oily substance. The analytical results are shown below. ##STR58## was added dropwise at room temperature After the addition extraction The resulting extract was washed with water a saturated sodium chloride aqueous solution, dried over sodium sulfate concentrated The resulting crude product was purified by column chromatography on silica gel

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

Procedure: A solution of 37.5 mL (20.3 mmol, 5.1 eq.) of a 0.54M solution of Grignard reagent (Part B) in tetrahydrofuran and 9 mL of hexamethylphosphoramide at room temperature under argon was treated over 10 minutes with a solution of 955.5 mg (3.97 mmol) of farnesyl chloride (Part A) in 5 mL of tetrahydrofuran. After one hour, the reaction mixture was diluted with a mixture of 1:1 diethyl ether : hexane and quenched with 1M HCl. The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine, dried over MgSO4 and evaporated to obtain 995.0 mg of crude product. Purification required two chromatographies. The first was run on 70 g of silica gel, eluting with 1:99 ethyl acetate:CH2Cl2 to provide 484.3 mg of impure material and 307.7 mg of pure title compound. The second chromatography, of the impure fractions, on 50 g of silica gel eluted with 0.75:99.25 ethyl acetate:CH2Cl2 gave 117.2 mg of slightly impure material and 302.8 mg of pure title compound. Combination of pure material from both columns gave a yield a yield of 610.5 mg (58%) of pure desired title isomer. hexane and quenched with 1M HCl The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine dried over MgSO4 evaporated to obtain 995.0 mg of crude product Purification eluting with 1:99 ethyl acetate

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

Procedure: A solution of 37.5 mL (20.3 mmol, 5.1 eq.) of a 0.54M solution of Grignard reagent (Part B) in tetrahydrofuran and 9 mL of hexamethylphosphoramide at room temperature under argon was treated over 10 minutes with a solution of 955.5 mg (3.97 mmol) of farnesyl chloride (Part A) in 5 mL of tetrahydrofuran. After one hour, the reaction mixture was diluted with a mixture of 1:1 diethyl ether : hexane and quenched with 1M HCl. The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine, dried over MgSO4 and evaporated to obtain 995.0 mg of crude product. Purification required two chromatographies. The first was run on 70 g of silica gel, eluting with 1:99 ethyl acetate:CH2Cl2 to provide 484.3 mg of impure material and 307.7 mg of pure title compound. The second chromatography, of the impure fractions, on 50 g of silica gel eluted with 0.75:99.25 ethyl acetate:CH2Cl2 gave 117.2 mg of slightly impure material and 302.8 mg of pure title compound. Combination of pure material from both columns gave a yield a yield of 610.5 mg (58%) of pure desired title isomer. hexane and quenched with 1M HCl The organic phase was washed with three 25 mL portions of saturated NaHCO3, three 25 mL portions of H2O, and 25 mL of brine dried over MgSO4 evaporated to obtain 995.0 mg of crude product Purification eluting with 1:99 ethyl acetate