APPROXIMATE RATE CONSTANTS FOR 5-EXO AND 6-EXO CYCLIZATIONS OF ALKYL RADICALS TO N-AZIRIDINYL IMINES

被引：28

作者：

KIM, S

CHEONG, JH

YOON, KS

机构：

[1] Department of Chemistry Korea Advanced Institute of Science and Technology, Taejon

来源：

TETRAHEDRON LETTERS | 1995年 / 36卷 / 34期

关键词：

D O I：

10.1016/0040-4039(95)01201-R

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Kinetic and competition studies establish that the rate constant for 6-exo cyclizations of alkyl radicals to N-aziridinyl imines is approximately 4.7x10(6) s(-1) at 80 degrees C, whereas competition studies indicate that the rate constant for the corresponding 5-exo cyclization would be over 2.5x10(8) s(-1) at 20 degrees C.

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页码：6069 / 6072

页数：4

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