.alpha.,.beta.-Unsaturated ketones and aldehydes and method of p

Details .alpha.,.beta.-Unsaturated ketones and aldehydes and method of p .alpha.,.beta.-Unsaturated ketones and aldehydes and method of p

1978-01-12

1979-11-20

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603478, 260590C, 260592, 260599, 260600R, 549 77, 549 78, 549 70, 549 73, C07C 4745

Patent

active

041750870

ABSTRACT:
.alpha.,.beta.-Unsaturated ketones and aldehydes, together with a method of preparation thereof which comprises reacting aldehydes and cyclic and acyclic ketones possessing a methyl or methylene group .alpha.- to the carbonyl function with N,N-dialkylformamide dialkyl acetal to yield the corresponding enaminoketones and enaminoaldehydes, which enaminoketones and enaminoaldehydes are allowed to react with alkyllithium reagents to yield the corresponding nitrogen-free 2-alkylidene ketones and 2-alkylidene aldehydes.

REFERENCES:
Seebach et al., Tetrahedron Letters, pp. 3171-3174 (1974).

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