Barriers to ring inversion in dibenzo[a,c]cyclooctene and its dihydro and tetrahydro derivatives by racemization and NMR bandshape studies
作者:Parviz Rashidi-Ranjbar、Jan Sandström
DOI:10.1016/s0040-4039(01)81036-4
日期:1987.1
Dibenzo[a,c]cyclooctene and its 9,10-dihydro and 9,10,11,12-tetrahydro derivatives have been resolved by chromatography and their inversion barriers determined by thermal racemization. The 9,12-dihydro derivative has been studied by 1H NMR bandshape technique.
二苯并[a,c]环辛烯及其9,10-二氢和9,10,11,12-四氢衍生物已通过色谱法分离,其反转化垒通过热消旋法确定。9,1-二氢衍生物已通过1 H NMR能带技术进行了研究。
Unsaturated eight-membered ring compounds. 15. 5,6-Didehydro-7-bromodibenzo[a,c]cyclooctene and 5,6-didehydro-8-tert-butoxydibenzo[a,c]cyclooctene as reactive intermediates. A convenient synthesis of dibenzo[a,c]cyclooctene
作者:Henry Nai Ching Wong、Franz Sondheimer
DOI:10.1021/jo01300a034
日期:1980.6
Vogel,E. et al., Angewandte Chemie, 1963, vol. 75, p. 979 - 980
作者:Vogel,E. et al.
DOI:——
日期:——
WONG H. N. C.; SONDHEIMER F., J. ORG. CHEM., 1980, 45, NO 12, 2438-2440
作者:WONG H. N. C.、 SONDHEIMER F.
DOI:——
日期:——
ISAKSSON, ROLAND;RASHIDI-RANJBAR, PARVIZ;SANDSTROM, JAN, J. CHEM. SOC. PERKIN TRANS. 1.,(1991) N, C. 1147-1152
作者:ISAKSSON, ROLAND、RASHIDI-RANJBAR, PARVIZ、SANDSTROM, JAN