The synthesis of 1,1-dialkyldithiobiurets from secondary amines by the sequence R2NH → R2N·CS·Cl → R2N·CS·SCN → R2N·CS·NCS → R2N·CS·NH·CS·NH2 is described.
由仲胺按照R 2 NH → R 2 N·CS·Cl → R 2 N·CS·SCN → R 2 N·CS·NCS → R 2 N·CS·NH·的顺序合成1,1-二烷基二硫代缩二脲描述了CS·NH 2。
Phosphaguanidine group IV metal olefin polymerization catalysts
申请人:Dow Global Technologies LLC
公开号:US11066495B2
公开(公告)日:2021-07-20
Embodiments are directed to phosphaguanidine metal complexes of formula I and using those complexes in α-olefin polymerization systems.