Bulletin of the Academy of Sciences of the USSR Division of Chemical Science p. 573 - 580 (1991)
Update date:2022-08-05
Topics:
Kasatkin, A. N.
Tsypyshev, O. Yu.
Romanova, T. Yu.
Tolstikov, G. A.
The allyl Mn(II) organic compounds R1CH=C(R2)CH2MnCl (R1=H, Me; R2=H, Me, Bu), obtained in situ from Grignard reagents and LiMnCl4, react with esters of 4-bromocrotonic, (2-bromobutylidene)-, (4-bromo-2-butenylidene)-, (2-bromoisobutylidene)malonic, and (2-bromoheptylidene)cyanoacetic acids in THF at -78 to +20 deg C to give derivatives of substituted cyclopropanecarboxylic or cyclopropane-1,1-dicarboxylic acids.These derivatives contain a fragment of the allyl type.When ethers of 2-(bromomethyl)acrylic, 4-bromo-2-methyl-, and 4-bromo-3-methyl-2-butenoic acids are used, cross-combination products result.
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