作者:Lili Wang、Rakesh Ganguly、François Mathey
DOI:10.1021/om500828n
日期:2014.10.13
The reaction of triethylamine with the [4 + 2] cycloadducts of phosphole sulfides and 3-bromo-N-phenylmaleimide provides a convenient access to phosphinidene sulfides [RP-S]. These transient species are trapped by 2,3-dimethyl-1,3-butadiene to give the previously unknown trivalent [4 + 2] cycloadducts. One of these (R = Ph) has been characterized as its P-W(CO)(5) complex by X-ray crystal structure analysis. With cyclopentadiene, the subsequent insertion of a second molecule of [RP-S] leads to a new type of bicyclic product containing a thiadiphospholane ring.