HEMETSBERGER, HELFRIED;NISPEL, FRANK, TETRAHEDRON., 46,(1990) N1, C. 3823-3840
作者:HEMETSBERGER, HELFRIED、NISPEL, FRANK
DOI:——
日期:——
SYNTHESIS OF <i>ENDO</i>-12-AMINOTRICYCLO[6.3.2.0<sup>2,7</sup>]TRIDECA-2(7),3,5-TRIENE-12-<i>EXO</i>-CARBOXYLIC ACID: A NOVEL, CONFORMATIONALLY RESTRICTED PHENYLALANINE ANALOGUE
作者:Peter A. Crooks、Jyothi Matheru
DOI:10.1081/scc-120015400
日期:2002.1.1
ABSTRACT A seven step synthesis of the conformationallyrestrictedphenylalanine analogue 9 from cycloheptadiene (1) is described.
摘要描述了从环庚二烯 (1) 合成构象受限的苯丙氨酸类似物 9 的七步。
Ring-strain effects on the efficiencies and deuterium effects on the efficiencies and regioselectivities of the di-π-methane rearrangement of bicyclic systems
作者:Helfried Hemetsberger、Frank Nispel
DOI:10.1016/s0040-4020(01)90518-6
日期:1990.1
synthesized and irradiated under sensitized conditions. The compounds 12 - 15 yielded di-π-methanerearrangement products. 16 was not reactive. The quantum yields for product formation were measured. They increase with ring strain of the bicyclic systems. A kinetic isotope effect on the regiospecifity of the rearrangement was observed in all cases. In addition, an isotope effect on the quantum yields of