Synthesis of Molybdenum Imido 2-Adamantylidene Complexes through α Hydrogen Abstraction
Synthesis of Molybdenum Imido 2-Adamantylidene Complexes through α Hydrogen Abstraction
复制标题
α 夺氢合成钼亚氨基 2-亚金刚烷基配合物
DOI:
10.1021/acs.organomet.0c00244
复制
发表时间:
2020
期刊:
影响因子:
2.8
通讯作者:
Tsay, Charlene
中科院分区:
文献类型:
--
作者:
Taylor, Jordan W.;Schrock, Richard R.;Tsay, Charlene
Addition of 2-adamantylMgBr in diethyl ether to Mo(NAr)2(Cl)2(DME) (Ar = 2,6-i-Pr2C6H3) gave Mo(NAr)2(2-Ad)2(2-Ad = 2-adamantyl, DME = 1,2-dimethoxyethane), from which Mo(NAr)(Adene)(OTf)2(DME) (1, Adene = 2-adamantylidene) was prepared upon addition of triflic acid. Methods analogous to those that have been successful for synthesizing neopentylidene and neophylidene complexes were used to form Mo(NAr)(Adene)(OMes)2(2; Mes = 2,4,6-trimethylphenyl), [Mo(NAr)(Adene)(OC6F5)2]2(3), Mo(NAr)(Adene)(OC6F5)2(MeCN) (4), Mo(NAr)(Adene)(Cl)2(bipy) (5; bipy = 2,2′-bipyridine), Mo(NAr)(Adene)(Cl)(OHMT) (6; OHMT = O-2,6-Mesityl2C6H3), Mo(NAr)(Adene)(Cl)(OHMT)(t-BuCN) (6(t-BuCN)), and Mo(NAr)(Adene)(OHMT)(Pyr) (7; Pyr = pyrrolide). Analogous methods beginning with Mo(N-t-Bu)2(2-Ad)2yielded Mo(N-t-Bu)(Adene)(Cl)2(bipy) (8a), Mo(N-t-Bu)(Adene)(Cl)(OHMT)(THF) (8b), Mo(N-t-Bu)(Adene)(Cl)(OHMT)(t-BuCN) (8c), and Mo(N-t-Bu)(Adene)(OHMT)(Pyr)(THF) (8d). X-ray structural studies of1-5,6(t-BuCN),7,8a,8c, and8dsuggest that one of the Adene β protons is engaged in an agostic interaction with the metal when the electron count is less than 18. Preliminary olefin metathesis studies confirm that Adene complexes react with cyclooctene and 1-decene in the manner expected for high-oxidation-state Mo alkylidene complexes.
登录
查看更多内容
影响因子:
4.9
作者:
V. C. Rojisha;Karikkeeriyil Nijesh;Susmita De;P. Parameswaran
通讯作者:
P. Parameswaran
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
Joel S. Freundlich;R. Schrock;C. Cummins;W. M. Davis
通讯作者:
W. M. Davis
影响因子:
2.3
作者:
Fioralba Taullaj;David G. Armstrong;Shaishav Datta;A. Lough;U. Fekl
通讯作者:
U. Fekl
影响因子:
2.8
作者:
Jordan W. Taylor;R. Schrock;C. Tsay
通讯作者:
C. Tsay
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
R. Schrock
通讯作者:
R. Schrock