On the role of samarium/HMPA in the post electron-transfer steps in Sml2 reductions

Hani Farran; Shmaryahu Hoz

doi:10.1021/ol7029883

On the role of samarium/HMPA in the post electron-transfer steps in Sml₂ reductions

Hani Farran, Shmaryahu Hoz

Department of Chemistry

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

The reaction of p,ṕ-dichlorobenzophenone with Sml₂ was studied in the presence of variable amounts of HMPA. The electron-transfer step takes place instantaneously. In the presence of excess substrate, the addition of HMPA retarded the rate of coupling to pinacol by a factor of 250. In the presence of an excess of Sml₂, the initial rate retardation is followed by a dramatic increase in rate.

Original language	English
Pages (from-to)	865-867
Number of pages	3
Journal	Organic Letters
Volume	10
Issue number	5
DOIs	https://doi.org/10.1021/ol7029883
State	Published - 6 Mar 2008

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abstract = "The reaction of p,ṕ-dichlorobenzophenone with Sml2 was studied in the presence of variable amounts of HMPA. The electron-transfer step takes place instantaneously. In the presence of excess substrate, the addition of HMPA retarded the rate of coupling to pinacol by a factor of 250. In the presence of an excess of Sml2, the initial rate retardation is followed by a dramatic increase in rate.",

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On the role of samarium/HMPA in the post electron-transfer steps in Sml₂ reductions

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