Process for the manufacture of 3-acyl-2-alkyl- and 3-acyl-2-aryl

Details Process for the manufacture of 3-acyl-2-alkyl- and 3-acyl-2-aryl Process for the manufacture of 3-acyl-2-alkyl- and 3-acyl-2-aryl

1979-06-18

1981-04-21

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260936, C07F 924

Patent

active

042632315

ABSTRACT:
3-Acyl-2-alkyl- and 3-acyl-2-aryl-1,3,2-benzoxazaphospholanes are prepared by reacting dichlorophosphanes, 2-N-acylaminophenols and organic nitrogen bases binding hydrogen chloride in a molar proportion of about 1:1.gtoreq.2 in an inert solvent in a one stage process without isolation of an intermediate product. The compounds obtained are, for the most part, novel and are used for the manufacture of alkyl- and aryl-1-oxophospholanes, which are used as catalysts for the production of rigid polyurethane foams.

REFERENCES:
patent: 3732340 (1973-05-01), Arnold et al.
M. A. Pudovik et al., "J. Org. Chem. (USSR)", vol. 44, pp. 983-988, (1974) (English translation of Zh. Obsh. Khim. 44, 1020 (1974).
Pudovik et al., "Chem. Abs.", vol. 81, No. 11, (1974), No. 63723f.
Pudovik et al., "Chem. Abs.", vol. 79, No. 11, (1973), No. 66261y.

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