Allenic esters, process for preparation thereof and process for

Details Allenic esters, process for preparation thereof and process for Allenic esters, process for preparation thereof and process for

1974-04-18

1976-08-31

Garvin, Patrick P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260486R, 260468R, 260468H, C11C 302

Patent

active

039781003

ABSTRACT:
Allenic esters of the formula: ##EQU1## (specific examples of R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are given) and a process for the preparation thereof which comprises reacting propargyl alcohol derivatives with 2-substituted ortho-acetic acid esters in the presence of an acidic catalyst. These allenic esters are rearranged in the presence of an alkali catalyst to form .alpha., .beta., .gamma., .delta.-unsaturated carboxylic acid esters and are useful as intermediates in the synthesis of various perfumes, medicines, agricultural chemicals and the like.

REFERENCES:
patent: 3236869 (1966-02-01), Thompson
patent: 3716565 (1973-02-01), Henrick
patent: 3732282 (1973-05-01), Henrick
patent: 3737442 (1973-06-01), Baum
patent: 3755411 (1973-08-01), Henrick

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