The synthesis of octavalene (tricyclo[5.1.0.02,8]octa-3,5-diene) and several substituted octavalenes
作者:Manfred Christl、Reinhard Lang、Clemens Herzog
DOI:10.1016/s0040-4020(01)87575-x
日期:1986.1
with a 1,3-butadiene bridge across its 2- and 4-position (11a). Finally, t-butyllithium removes the two Br atoms from 11a and converts it into a 4:1 mixture of 1a and cyclooctatetraene. This reaction sequence represents the first application of protective group strategy in bicyclo[1.1.0]butane chemistry. Octavalene (1a) is shown to rearrange to cyclooctatetraene at 50°. Deuterium-labeled 1a ([1,8-D2]