Structural Effects on the Rh<sup>II</sup>-Catalyzed Rearrangement of Cyclopropenes
作者:Paul Müller、Christian Gränicher
DOI:10.1002/hlca.19930760134
日期:1993.2.10
The thermocatalytic rearrangement of 2-alkylcycloprop-2-ene-1-carboxylates (1) in the presence of RhII perfluorobutyrate is regio- and stereospecific and leads to the substituted metallocarbenes 3. The latter undergo intramolecular CH bond insertion to form cyclopentylidenes (4). In contrast, the metallocarbenes 19, derived from 2,3-dialkylcycloprop-2-ene-1-carboxylates 6c, d, react to dienes (Z)-20