18215-71-9Relevant articles and documents
Kinetic Resolution of Tertiary Propargylic Alcohols by Enantioselective Cu?H-Catalyzed Si?O Coupling
Seliger, Jan,Dong, Xichang,Oestreich, Martin
supporting information, p. 1970 - 1974 (2019/01/29)
A broad range of tertiary propargylic alcohols were kinetically resolved by catalyst-controlled enantioselective silylation. This non-enzymatic kinetic resolution is catalyzed by a Cu?H species and makes use of the commercially available precatalyst MesCu/(R,R)-Ph-BPE and a simple hydrosilane as the resolving reagent. Both alkyl,aryl- as well as dialkyl-substituted propargylic alcohols participate, and especially high selectivity factors are achieved when the alkyne terminus carries a TIPS group, which also enables facile post-functionalization in this position (s up to 207).
Alkynylaluminum Synthesis Catalyzed by a Zwitterionic Neodymium(III) Heterobimetallic Compound
Kanbur, Uddhav,Ellern, Arkady,Sadow, Aaron D.
, p. 4409 - 4414 (2019/01/03)
The reaction of H{PhB(OxMe2)2C5H5} (OxMe2 = 4,4-dimethyl-2-oxazoline) with Nd(AlMe4)3 (1) provides Me2Al{(OxMe2)2PhBCp}Nd(AlMe4)2
Direct Substitution of Secondary and Tertiary Alcohols to Generate Sulfones under Catalyst- and Additive-Free Conditions
Liu, Yanan,Xie, Peizhong,Sun, Zuolian,Wo, Xiangyang,Gao, Cuiqing,Fu, Weishan,Loh, Teck-Peng
supporting information, p. 5353 - 5356 (2018/09/13)
An environmentally benign protocol that affords propargylic sulfones containing highly congested carbon centers from easily accessible alcohols and sulfinic acids with water as the only byproduct is reported. The reaction proceeded via an in situ dehydrative cross-coupling process by taking advantage of the synergetic actions of multiple hydrogen bonds rather than relying on an external catalyst and/or additives to achieve high product distribution.