Process for the preparation of vinyl carbamates

Details Process for the preparation of vinyl carbamates Process for the preparation of vinyl carbamates

1983-09-19

1988-09-20

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

544172, 544388, 544389, 546130, 546189, 546226, 546245, 546321, 548261, 548262, 560 24, 560 30, 560115, 560158, 560161, 560167, 560168, 560213, 585642, 585657, 260696, C07D27308

Patent

active

047726954

ABSTRACT:
A process for the preparation of vinyl carbamates of formula I ##STR1## is described which comprises heating an .alpha.-halogeno-carbamate of formula II ##STR2## in which X is a halogen atom at a temperature between 70.degree. and 250.degree. C. for a period of time between several minutes up to several hours. R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different. The process is applicable to a great variety of products in which R.sub.1, R.sub.2, R.sub.3, and R.sub.4 have different meanings. The process permits to prepare in a simple and economical fashion, vinyl carbamates, which have industrial value and novel vinyl carbamates.

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Lucas, Organic Chemistry, Sec. Ed., 1953, American Book Co., N.Y., pp. 60-61, 65, 112-115.

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