Singlet Oxygen and the Production of Sulfur Oxygenates of Nickel(II) and Palladium(II) Thiolates
作者:Craig A. Grapperhaus、Michael J. Maguire、Thawatchai Tuntulani、Marcetta Y. Darensbourg
DOI:10.1021/ic970050d
日期:1997.4.1
acetonitrile and sulfoxides favored in methanol. There is also a ligand and metal effect. The proposed mechanistic pathways involving a persulfoxide precursor to single sulfur site O(2) addition (producing metallosulfones) and adjacent sulfur site O(2) addition (producing metallosulfoxides) are consistent with product distribution, comparison to the much studied oxygenation of organic sulfides, and previous
二硫醇金属[1,5-双(2-巯基乙基)-1,5-二氮杂环辛烷]镍(II)(Ni-1),位阻类似物(Ni-1)和钯类似物Pd-1与之反应(1)Delta O(2)产生各种稳定且可分离的金属氯砜(MS(O(2))R)和金属氯亚砜(MS(O)R)。通过敏化剂Rose Bengal光化学产生单线态氧,并通过1,4-二甲基萘的1,4-内过氧化物分解产生热态单线态氧。O(2)从其基态(3)Sigma激发到激发态(1)Delta时,观察到速率增加和氧合产率增加。反应取决于溶剂和浓度,其中乙腈中通常优选砜,而甲醇中通常优选亚砜。还有配体和金属效应。