1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP)-Assisted Catalyst-Free Sulfonation of Allylic Alcohols with Sulfinyl Amides
作者:Zhen Luo、Zheng-Qiang Liu、Ting-Ting Yang、Xin Zhuang、Chuan-Ming Hong、Fei-Fei Zou、Zhi-Yong Xue、Qing-Hua Li、Tang-Lin Liu
DOI:10.1021/acs.orglett.1c04206
日期:2022.1.21
A highly regioselective and catalyst-free sulfonation of allylic alcohols with sulfinyl amides has been realized. Such a mix-and-go procedure provides a convenient approach to synthetically various allylic sulfones under mild reaction conditions. Furthermore, this novel reaction shows ample substrate scope and outstanding functional group tolerance and could also be scaled-up. Meanwhile, it is the
When benzylic and allylic alcohols were treated with enolacetate in the presence of a catalytic amount of a rhenium complex, ReBr(CO)5, the carbon-carbon bond formation of the alcohols and enolacetate smoothly proceeded to give the corresponding ketones and aldehyde in moderate to good yields. For the reaction of allylic alcohols, γ,δ-unsaturated carbonylcompounds were obtained in good yields. When
conditions. In the presence of B(C6F5)3, wide-spectrum P–H species, including dialkylphosphite, hypophosphite ester, and secondaryphosphine oxides, can be successfully incorporated into the dehydrative cross-coupling process with allylic alcohols delivering the corresponding allylic organophosphorus compounds in high yields.
在无金属和无溶剂的条件下开发了一种环境友好的C-P键构建方案。在存在B(C 6 F 5)3的情况下,可以将广谱的P–H物质(包括亚磷酸二烷基酯,次磷酸酯和仲膦氧化物)成功地引入脱水交叉偶联过程中,其中烯丙醇可提供相应的烯丙基有机磷化合物高产。
Barium-catalyzed C–OH/P–H dehydrative cross-coupling for C–P bond construction
Organocatalytic α-Allylation of α-Branched Aldehydes by Synergistic Catalysis of Brønsted Acids and Amines
作者:Filip Stanek、Maciej Stodulski
DOI:10.1002/ejoc.201600725
日期:2016.10
Herein, we describe the first, fully organocatalytic Tsuji–Trost-type direct α-allylation of α-branched aldehydes by the combined use of N-triflyl amides and secondary amines. Aliphatic, aromatic aldehydes as well as allyl alcohols are converted into the corresponding α-allylated products in moderate to high yields.