Sarkar, Niladri ; Nayek, Abhijit ; Ghosh, Subrata (2004) Copper(I)-catalyzed intramolecular asymmetric [2 + 2] photocycloaddition. Synthesis of both enantiomers of cyclobutane derivatives Organic Letters, 6 (12). pp. 1903-1905. ISSN 1523-7060
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ol049696h
Related URL: http://dx.doi.org/10.1021/ol049696h
Abstract
A simple approach for asymmetric induction in Cu(I)-catalyzed [2+2] photocycloaddition, where asymmetric catalysts or chiral auxiliaries were inefficient, has been developed using the concept of chirality transfer from the readily available 2, 3-di-O-cyclohexylidine-(R)-(+)-glyceraldehyde. An anion-induced cleavage of the tetrahydrofuran ring of the resulting oxa-bicyclo[3.2.0]heptanes led to a convenient access to the synthetically useful cis-1,2-disubstituted cyclobutanes in enantiomerically pure form.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 12231 |
| Deposited On: | 10 Nov 2010 04:55 |
| Last Modified: | 12 Feb 2011 11:28 |
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