Chemo- and Stereoselective Coordination of 5,6-Dimethylidene-7-oxabicyclo[2.2.1]hept-2-ene by d8- and d6-Metal Carbonyls.Diels-Alder reactivity of Dienes Perturbed by Remote Olefin Complexation
作者:Philippe Vioget、Massimiliano Bonivento、Raymond Roulet、Pierre Vogel
DOI:10.1002/hlca.19840670632
日期:1984.9.26
6-dimethylidene-7-oxabicyclo[2.2.1]hept-2-ene)]chromium (10) or -tungsten (11). Irradiation of complexes 6 and 11 in the presence of 1 led to further CO substitution giving bed-tricarbonyl-ae-bis[(1R,2R,3S,4S)-2,3-η-(5,6-dimethylidene-7-oxabicyclo[2.2.1]hept-2-ene)]ruthenium (7) and trans-tetracarbonyl[(1R,2R,3S,4S)-2,3-η-(5,6-dimethylidene-7-oxabicyclo-[2.2.1]hept-2-ene)]tungsten (12), respectively
所述内环双键C(2),C(3)在5,6-二亚甲基-7-氧杂双环[2.2.1] -庚-2-烯(1)可以选择性地他协调它的外面取向的络合前环外顺-顺-丁二烯部分。在1的存在下辐射Ru 3(CO)12或Os 3(CO)12产生四羰基[(1 R,2 R,3 S,4 S)-2,3-η-(5,6-二甲基- 7-氧杂双环[2.2.1]-庚-2-烯)]钌(6)或-os(8)。类似地,辐照Cr(CO)6或W(CO)6在1的存在下得到五羰基[[(1 R,2 R,3 S,4 S)-2,3-η-(5,6-二甲叉基-7-氧杂双环[2.2.1]庚-2-烯)]铬(10)或-钨(11)。复合物的照射6和11中的存在1导致进一步的CO替代给床-tricarbonyl- AE -双[(1 - [R,2 - [R,3小号,4小号)-2,3-η-(5,6-二甲叉基-7-氧杂双环[2.2.1]庚-2-烯)钌(7)和反式-四羰基[(1R,2