di(propan-2-yloxy)phosphorylmethanol

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

Procedure: A mixture of 33.2 g (0.20 mol) of diisopropyl phosphite, 2.8 ml (0.02 mol) of triethylamine, and 6.0 g (0.20 mol) of paraformaldehyde, was immersed in a 100° C. oil bath and then heated between 100°-120° C. for 45 minutes under nitrogen. An exotherm occurred within 10 minutes and all of the paraformaldehyde dissolved rapidly. The triethylamine was removed at reduced pressure, and the residue was bulb-to-bulb distilled in four portions to provide a total of 35.17 g (91%) of title compound as a colorless oil. TLC Silica gel (5:95 CH3OH:CH2Cl2) Rf =0.17 was immersed in a 100° C. heated between 100°-120° C. for 45 minutes under nitrogen The triethylamine was removed at reduced pressure distilled in four portions

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

Procedure: A solution of 20 ml of ether, 8.6 g of diisopropyl P-(hydroxymethyl)phosphonate, prepared in Example 17, and 6.9 ml of triethylamine was added dropwise over 25 minutes to 15.2 g of crude 2-methyl-6-(difluoromethoxy)benzenesulfonyl chloride, prepared in Example 3, in 70 ml of ether. After the mild exotherm, the reaction was allowed to stir overnight at room temperature and was then diluted with 200 ml of ethyl acetate, the resulting ethyl acetate solution washed with two 80 ml portions of water, dried with magnesium sulfate, filtered, and concentrated to yield 10.2 g of the very crude desired product as a black oil. The crude product was dissolved in 10 ml of methylene chloride and flash chromatographed on Merck silica gel using ethyl acetate and hexanes. After combining similar fractions, the desired product was isolated as an amber oil in low yield. the resulting ethyl acetate solution washed with two 80 ml portions of water dried with magnesium sulfate filtered concentrated to yield 10.2 g of the very crude desired product as a black oil flash chromatographed on Merck silica gel

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

Procedure: A solution of 20.6 g of diisopropyl P-(hydroxymethyl)-phosphonate, prepared in Example 17, and 14.7 ml of triethylamine diluted in 35 ml of ether was added dropwise over 60 minutes to a mixture of 23.97 g of 2,6-dichlorobenzenesulfonyl chloride and 140 ml of ether. The addition was mildly exothermic. The reaction was allowed to stir at room temperature overnight and then was diluted with 220 ml of ethyl acetate, the ethyl acetate solution washed with two 80 ml portions of water, dried with magnesium sulfate, filtered, and concentrated to yield 35.1 g of the crude desired product as a yellow oil. The oil was dissolved in 25 ml of methylene chloride and flash chromatographed using ethyl acetate and hexanes. Similar fractions were combined to yield 20.5 g of the desired product as an oil. The addition the ethyl acetate solution washed with two 80 ml portions of water dried with magnesium sulfate filtered concentrated to yield 35.1 g of the crude desired product as a yellow oil flash chromatographed

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

Procedure: A solution of 30 ml of ether, 13.3 g of diisopropyl P-(hydroxymethyl)phosphonate, prepared in Example 17, and 10.5 ml of triethylamine was added dropwise over 60 minutes to a solution of 15.35 g of 2-(trifluoromethyl)benzenesulfonyl chloride and 50 ml of ether. After the mild exotherm, the reaction was allowed to stir at room temperature overnight and then was diluted with 200 ml of ethyl acetate, the ethyl acetate solution washed with two 100 ml portions of water, dried with magnesium sulfate, filtered, and concentrated to yield 16.3 g of the desired product as an oil. the ethyl acetate solution washed with two 100 ml portions of water dried with magnesium sulfate filtered concentrated

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

Procedure: A solution of 21.7 g of 2-chloro-6-methylbenzenesulfonyl chloride dissolved in 40 ml of ether was added dropwise over 90 minutes to a mixture of 20.6 g of diisopropyl P-(hydroxymethyl)-phosphonate, (Example 17), 80 ml of ether, and 15.4 ml of triethylamine. The addition was mildly exothermic and the reaction was cooled using a cool water bath (no ice). The reaction was allowed to stir overnight at room temperature and then was diluted with 300 ml of ethyl acetate, washed with three 100 ml portions of water, the organic phase dried with magnesium sulfate, filtered and concentrated under reduced pressure to yield 34.0 g of the desired product as a yellow oil. The addition the reaction was cooled washed with three 100 ml portions of water the organic phase dried with magnesium sulfate filtered concentrated under reduced pressure

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

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

Procedure: A mixture of 33.2 g (0.20 mol) of diisopropyl phosphite, 2.8 ml (0.02 mol) of triethylamine, and 6.0 g (0.20 mol) of paraformaldehyde, was immersed in a 100° C. oil bath and then heated between 100°-120° C. for 45 minutes under nitrogen. An exotherm occurred within 10 minutes and all of the paraformaldehyde dissolved rapidly. The triethylamine was removed at reduced pressure, and the residue was bulb-to-bulb distilled in four portions to provide a total of 35.17 g (91%) of title compound as a colorless oil. TLC Silica gel (5:95 CH3OH:CH2Cl2) Rf =0.17 was immersed in a 100° C. heated between 100°-120° C. for 45 minutes under nitrogen The triethylamine was removed at reduced pressure distilled in four portions

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

Procedure: A mixture of 33.2 g (0.20 mol) of diisopropyl phosphite, 2.8 ml (0.02 mol) of triethylamine, and 6.0 g (0.20 mol) of paraformaldehyde, was immersed in a 100° C. oil bath and then heated between 100°-120° C. for 45 minutes under nitrogen. An exotherm occurred within 10 minutes and all of the paraformaldehyde dissolved rapidly. The triethylamine was removed at reduced pressure, and the residue was bulb-to-bulb distilled in four portions to provide a total of 35.17 g (91%) of title compound as a colorless oil. TLC Silica gel (5:95 CH3OH:CH2Cl2) Rf =0.17 was immersed in a 100° C. heated between 100°-120° C. for 45 minutes under nitrogen The triethylamine was removed at reduced pressure distilled in four portions