[EN] HEAVY ATOM LABELED NUCLEOSIDES, NUCLEOTIDES, AND NUCLEIC ACID POLYMERS, AND USES THEREOF [FR] NUCLÉOSIDES, NUCLÉOTIDES ET POLYMÈRES D'ACIDES NUCLÉIQUES MARQUÉS AVEC DES ATOMES LOURDS ET LEURS UTILISATIONS
It was found that sodium salt of 1,2-benzisothiazole-3(2H)-thione 1,1-dioxide (thiosaccharin) readily reacted with alkyl halide affording 3-(alkylthio)-1,2-benzisothiazole 1,1-dioxide (3). Treatment of 3 with piperidine produces the corresponding alkanethiol in situ quantitatively and subsequent treatment with various electrophiles gives the corresponding sulfides and thiocarboxylic S-esters in good yields.
One-pot synthesis of thioesters with sodium thiosulfate as a sulfur surrogate under transition metal-free conditions
作者:Yen-Sen Liao、Chien-Fu Liang
DOI:10.1039/c8ob00178b
日期:——
In this paper, we report an efficient synthetic method for thioester formation fromsodium thiosulfate pentahydrate, organic halides, and aryl anhydrides. In the one-pot two-step reactions developed in this study, sodium thiosulfate was used as the sulfur surrogate for acylation with anhydrides, followed by substitution with organic halides through the in situ generation of thioaroylate. Furthermore
A Convenient Laboratory Preparation of Propargylthiol and Its Derivatives
作者:Jaume Castro、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1055/s-1997-1220
日期:1997.5
Reduction of propargyl S-thioacetate, followed by elimination of excess hydride and acidification, constitutes a practical alternative for the preparation of propargylthiol (as a solution of easily determined concentration) or of its derivatives (by trapping the intermediate thiolate with a suitable electrophile).
Rhodium-catalyzed denitrogenative <i>gem</i>-difunctionalization of pyridotriazoles with thioesters: formal carbene insertion into C(O)–S bonds
作者:Zhe Gao、Di Jiang、Bin Li、Baiquan Wang
DOI:10.1039/d1cc06041d
日期:——
A formalcarbeneinsertion into C(O)–S bonds to access α-quaternary pyridines was achieved via a rhodium(II)-catalyzed in situ formation of sulfonium ylides from pyridotriazoles with thioesters followed by acyl group migration. This protocol has enabled an efficient denitrogenative gem-acylthiolation of pyridotriazoles to incorporate an acyl, pyridyl, and sulfur-substituted quaternary carbon center
通过铑( II )催化从吡啶三唑与硫酯原位形成锍叶立德,随后酰基迁移,实现了正式的卡宾插入C(O)-S键以接近α-季吡啶。该协议使吡啶三唑的高效脱氮宝石-酰基硫醇化能够结合酰基、吡啶基和硫取代的季碳中心,具有高选择性、广泛的底物范围和良好的官能团耐受性。
An Odorless, One-Pot Synthesis of Thioesters from Organic Halides, Thiourea and Benzoyl Chlorides in Water
作者:Guo-ping Lu、Chun Cai
DOI:10.1002/adsc.201201059
日期:2013.5.3
Thioesterification can be realized via an odorless, one‐pot reaction through the in situ generation of S‐alkylisothiouronium salts from organic halides and thiourea in aqueous Triton X‐100 (TX100) micelles. The protocol is free of foul‐smell thiols and organic solvents, and operates under mild conditions, thereby offering considerable potential for applications in organic synthesis.