STEREOSPECIFIC CYCLOPROPENIC SYNTHESIS OF CIS-CHRYSANTHEMIC METHYL ESTER. 2. THE BY-PASSING DIAZOALKANE WAY (1).

DOI: 10.1016/S0040-4039(00)87119-1

Source and publish data:

Tetrahedron Letters p. 1409 - 1412 (1982)

Update date:2022-08-04

Topics:

Authors:

Franck-Neumann, M.

Miesch, M.

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Article abstract of DOI:10.1016/S0040-4039(00)87119-1

A stereospecific synthesis of cis-chrysanthemate by catalytic hydrogenation of a cyclopropene is described.The required precursor, a 3H-pyrazole, is obtained here via a novel dianion reaction and MnO2 dehydrogenation of a Δ²-pyrazoline, instead of the more cumbersome diazoaddition method.

Full text of DOI:10.1016/S0040-4039(00)87119-1

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