The Journal of Organic Chemistry

Preparation of nonsymmetrical p-benzoquinone diimides for evaluation as protein cleavage reagents

TJ Holmes Jr, RG Lawton

Index: Holmes, Thomas J.; Lawton, Richard G. Journal of Organic Chemistry, 1983 , vol. 48, # 19 p. 3146 - 3150

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Citation Number: 21

Abstract

Although the unsubstituted benzoquinone diimine (IC) could not be isolated in crystalline form, conversion of the crude oil to the stable HC1 adduct (4h) proceeded in satisfactory yield (75%). Rapid chromatography, which enabled purification of the sensitive 2- chlorobenzoquinone diimine lh, was not attempted with the brominated unsubstituted benzoquinone diimine IC. In contrast, the non-brominated, unsubstituted benzoquinone ...

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