Low temperature carbene transfer from alkoxychromium(0) (Fischer) carbene complexes

Authors
Sierra, MA del Amo, JC Mancheno, MJ Gomez-Gallego, M
Citation
Ma. Sierra et al., Low temperature carbene transfer from alkoxychromium(0) (Fischer) carbene complexes, TETRAHEDR L, 42(32), 2001, pp. 5435-5438
Citations number
39
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
42
Issue
32
Year of publication
2001
Pages
5435 - 5438
Database
ISI
SICI code
0040-4039(20010806)42:32<5435:LTCTFA>2.0.ZU;2-7
Abstract
Irradiation at low temperatures (0 degreesC) of alkyl-, aryl- and styryl al koxychromium(0)carbene complexes in the presence of methyl acrylate produce s a mixture of diastereomeric cyclopropanes and C-H insertion derivatives. The ratio cyclopropane/C-H insertion product is independent of the reaction conditions, while the cyclopropane cis:trans ratio strongly depends on the solvent, the selectivity increasing as the polarity of the reaction solven t does. (C) 2001 Elsevier Science Ltd. All rights reserved.