Tacke, Reinhold; Wagner, Stephan A.; Sperlich, Joerg, Chemische Berichte, 1994, vol. 127, # 4, p. 639 - 642
作者:Tacke, Reinhold、Wagner, Stephan A.、Sperlich, Joerg
DOI:——
日期:——
Homologation of halostannanes with carbenoids: a convenient and straightforward one-step access to α-functionalized organotin reagents
作者:Saad Touqeer、Laura Castoldi、Thierry Langer、Wolfgang Holzer、Vittorio Pace
DOI:10.1039/c8cc04786c
日期:——
A direct, single synthetic homologative transformation of halostannanes into mono- or di-substituted methyl analogues is documented. Critical for the success of the operation is the excellent nucleophilicity of carbenoid-like methyllithium reagents (LiCHXY, X, Y = halogen, OR, and CN): by simply individuating the reagents’ substitution pattern, the desired functionalized fragment is delivered to the
ELECTRON DONORS FOR ZIEGLER-NATTA PRECATALYST PREPARATION AND CATALYST SYSTEM FOR OLEFIN POLYMERIZATION
申请人:W.R. GRACE & CO.-CONN.
公开号:US20200010586A1
公开(公告)日:2020-01-09
A solid precatalyst component for use in olefmic polymerization, includes titanium, magnesium, and an electron donor Ccompound; wherein: the electron donor compound is at least one compound represented by Formula (I).