16212-07-0Relevant articles and documents
Palladium-triethylborane-triggered direct and regioselective conversion of allylic alcohols to allyl phenyl sulfones?
Chandrasekhar, Srivari,Jagadeshwar, Vannada,Saritha, Birudaraju,Narsihmulu, Cheryala
, p. 6506 - 6507 (2005)
A combination of Pd(OAc)2 (5 mol %), PPh3 (10 mol %), and Et3B (200 mol %) promotes the formation of allyl phenyl sulfones from the allylic alcohols directly with excellent yields under mild conditions. The activation of an alcohol group is not necessary which is achieved in situ. The conjugated dienols also were equally effective for the said transformation.
Reciprocal-Activation Strategy for Allylic Sulfination with Unactivated Allylic Alcohols
Xie, Peizhong,Sun, Zuolian,Li, Shuangshuang,Cai, Xinying,Qiu, Ju,Fu, Weishan,Gao, Cuiqing,Wu, Shisheng,Yang, Xiaobo,Loh, Teck-Peng,Loh, Teck-Peng
supporting information, p. 4893 - 4897 (2020/06/24)
A reciprocal-activation strategy for allylic sulfination with unactivated allylic alcohols was developed. In this reaction, the hydrogen bond interaction between allylic alcohols and sulfinic acids allowed for reciprocal activation, which enabled a dehydrative cross-coupling process to occur under mild reaction conditions. This reaction worked in an environmentally friendly manner, yielding water as the only byproduct. A variety of allylic sulfones could be obtained in good to excellent yields with wide functional group tolerance. In gram scale reactions, allylic sulfones could be conveniently isolated in high yield by filtration.
Vinylethylene Carbonates as α,β-Unsaturated Aldehyde Surrogates for Regioselective [3 + 3] Cycloaddition
Xu, Yi,Chen, Lu,Yang, Yu-Wen,Zhang, Zhiqiang,Yang, Weibo
, p. 6674 - 6678 (2019/09/03)
Herein, we report a novel stepwise addition-controlled ring size method, to access tetrahydropyrimidines through an operationally simple [3 + 3] cycloaddition of vinylethylene carbonates with triazinanes. Interestingly, we could also use this method for a [3 + 3] oxidative cycloaddition, which allows the facile synthesis of polysubstituted terphenyls under mild conditions. Mechanistic studies suggest that vinylethylene carbonates could generate α,β-unsaturated aldehydes as 3-carbon synthons for cycloaddition via a combination process of Pd-catalyzed decarboxylation and β-H elimination.