Process for the preparation of compounds halogenated .alpha. to

Details Process for the preparation of compounds halogenated .alpha. to Process for the preparation of compounds halogenated .alpha. to

1985-07-10

1987-11-10

Moyer, Donald B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260408, 558388, 558438, 558440, 558441, 558442, 558443, 558445, 558454, 558457, 558460, 560 51, 560 81, 560111, 560150, 560156, 560172, 560174, 560177, 560192, 560205, 560219, 560226, 564172, 564182, 564199, 564209, 568 28, 564204, 568306, 568307, 568316, 568393, 568433, 568459, 568466, 568928, 568936, 568946, C07C14706

Patent

active

047056509

ABSTRACT:
Compounds halogenated in the .alpha.-position to an electron-attracting group of formula ##STR1## in which X denotes a halogen atom, R denotes a hydrogen atom or a hydrocarbon radical or a radical --(CH.sub.2).sub.3 --COOR.sub.1 and Z denotes a radical --CHO, --COR.sub.2, --COOR.sub.3, --CONR.sub.4 R.sub.5, --CN, --SO.sub.2 R.sub.6, --NO.sub.2, --CO--(CH.sub.2)p--COO.sub.1 or --COO(CH.sub.2)p--COOR.sub.1 are made by a halogenating deacylation of a compound of formula ##STR2## in which R' denotes a hydrogen atom or a hydrocarbon radical, R" denotes a methyl radical and Z' denotes a radical --CHO, --COR.sub.2, --COOR.sub.3, --CONR.sub.4 R.sub.5, --CN, --SO.sub.2 R.sub.6 or --NO.sub.2 or R' and R" may form a radical --(CH.sub.2)-- or R' and R" may form a radical --CO--(CH.sub.2)p-- or --COO(CH.sub.2)p--, using an alkali metal alcoholate or an alkali or alkaline-earth metal carbonate and a halogenating agent.

REFERENCES:
Boatman et al., J. Org. Chem., vol. 30, pp. 3321-3324, (1965).
Stotter et al., Tetrahedron Letters, 1972, No. 40, pp. 4067-4070.
Organic Syntheses, pp. 766-771.
Otto Isler, "Bitamina A e carotenoidi(*)" vol. 49, No. 12--Dec. 1967, pp. 1317-1332.

Affiliated with

Also associated with

Rating

Process for the preparation of compounds halogenated .alpha. to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of compounds halogenated .alpha. to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of compounds halogenated .alpha. to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1066853