The Catalytic Ring‐opening Cyclooligomerization (ROC) of Thietane by the Complexes M(CO)
<sub>5</sub>
L (M Cr and W; L = CO, thietane and 1,5,9‐Trithiacyclododecane)
作者:Richard D. Adams、Stephen B. Falloon、Joseph L. Perrin、Joachim A. Queisser、John H. Yamamoto
DOI:10.1002/cber.19961290311
日期:1996.3
compounds contain a W(CO)5 group coordinated to one of the sulfur atoms of the hetero-cycle. The ability of the compounds M(CO)6, 1 and 2 (M = Cr and W), and 3 – 5 to catalytically produce ring opening cyclooligomerization (ROC) of thietane into 12S3 and 24S6, (24S6 = 1,5,9,13,17,21-hexathiacyclotetracosane) has been investigated. Compounds 1 – 3 have relatively low activity. Compounds 4 and 5 have the
已合成以下四种化合物:M(CO)5 L(3和4,其中M = Cr和W,并且L = H 2),W(CO)5(12S3)(5,其中12S3 = 1,5 ,9-三硫代-环十二烷)和[W(CO)5 ] 2(12S3)(6)。通过单晶X射线衍射分析确定了4和5的分子结构。两种化合物均含有与杂环的硫原子之一配位的W(CO)5基团。的能力的化合物M(CO)6,1和2(M = Cr和W),和已经研究了3 – 5催化将硫杂环丁烷开环成环低聚(ROC)成为12S3和24S6(24S6 = 1,5,9,13,17,21-六硫代环四氢烷)。化合物1-3的活性相对较低。化合物4和5对12S3的形成具有最高的活性和选择性。晶体数据为4:空间群= P 2 1 2 1 2 1,一个= 12.906(2)埃,b = 13.730(4),C ^ = 6.427(1)埃,Ž = 4,1306个反射,- [R = 0.033 ;