Synthesis, spontaneous racemization, and photoisomerization of benzo[e]pyrene 9,10-oxide
作者:Shiv K. Agarwal、Derek R. Boyd、Robert Dunlop、W. Brian Jennings
DOI:10.1039/p19880003013
日期:——
Benzo[e]pyrene9,10-oxide (4) and the isomeric pyreno[4,5-b]oxepine (9) have been simultaneously synthesized from racemic and optically active bromo acetate precursors of known absolute configurations. Spontaneous thermal racemization of benzo[e]pyrene9,10-oxide (4)[via the undetected oxepine intermediate (15)], and readily occurring photoisomerization of this arene oxide [via the putative arene oxide
苯并[ e ] py9,10-氧化物(4)和同分异构的吡喃并[4,5- b ]氧杂环丁烷(9)已从已知绝对构型的外消旋和旋光乙酸溴代前体同时合成。苯并[ e ] py9,10-氧化物(4)[通过未发现的氧杂环丁烷中间体(15))自发热消旋,并容易发生该芳烃氧化物[通过推定的芳烃氧化物中间体(16)]发生光异构化,从而生成吡啶酮[ 4,5- b ]奥西平(9)]的发生是根据与这些周环反应相关的共振能量变化的PMO计算所预测的。获得了哺乳动物代谢产物9,10-环氧-(12)和反式-9,10-二羟基-9,10,11,12-四氢苯并[ e ] py的光学纯样品(13)。
AGARWAL, SHIV K.;BOYD, DEREK R.;DUNLOP, ROBERT;JENNINGS, W. BRIAN, J. CHEM. SOC. PERKIN TRANS. PT 1,(1988) N1, C. 3013-3018
作者:AGARWAL, SHIV K.、BOYD, DEREK R.、DUNLOP, ROBERT、JENNINGS, W. BRIAN
DOI:——
日期:——
BOYD, DEREK R.;AGARWAL, SHIV K.;BALANI, SURESH K.;DUNLOP, ROBERT;GADAGINA+, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 21, 1633-1635