Interrupted CuAAC‐Thiolation for the Construction of 1,2,3‐Triazole‐Fused Eight‐Membered Heterocycles from
<i>O</i>
‐/
<i>N</i>
‐Propargyl derived Benzyl Thiosulfonates with Organic Azides
click-sulfenylation of O-/N-propargyl benzyl thiosulfonates with organic azides has been disclosed. The unified CuAAC-thiolation provides a wide range of triazole-fused eight-membered heterocycles in good to high (51–94%) yields under mild reaction conditions. Moreover, a three-component reaction is also achieved involving O-/N-propargyl benzyl thiosulfonates, benzyl bromide, and sodium azide to deliver fused-triazoles
Synthesis of Monofluoromethylthioesters from Aldehydes
作者:Shi-Huan Guo、Meng-Yue Wang、Gao-Fei Pan、Xue-Qing Zhu、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1002/adsc.201800136
日期:2018.5.2
A direct and efficient approach to the synthesis of monofluoromethylthioesters from aldehydes has been developed. The synthetic method features mild reaction conditions, good tolerance of functional groups, a broad substrate scope, and especially no metal involved in the reaction. The approach has the potential to be an important tool for the late‐stage functionalization of advanced synthetic intermediates
Sodium alkane- and arenesulfinates were readily sulfurized with benzopentathiepin in usual organic solvents at room temperature to give corresponding thiosulfonates in good yields.
eco-friendly method has been developed for the synthesis of allyl thiosulfonates using Morita–Baylis–Hillman (MBH) allyl bromides and sodium arylthiosulfonates, which were readily assembled without any reagent/catalyst. Moreover, the allyl thiosulfonates were successfully transformed into a set of two synthetically viable diallyl disulfanes and unsymmetrical allyl disulfanes in the presence of Cs2CO3. The present
已经开发出一种实用、高度灵活且环保的方法,用于使用 Morita-Baylis-Hillman (MBH) 烯丙基溴和芳基硫代磺酸钠合成烯丙基硫代磺酸盐,无需任何试剂/催化剂即可轻松组装。此外,在Cs 2 CO 3存在下,烯丙基硫代磺酸盐成功地转化为一组两种合成可行的二烯丙基二硫烷和不对称烯丙基二硫烷。本协议在操作上简单方便,可生成多种功能化的烯丙基硫代磺酸盐和烯丙基二硫烷,产率良好。
CHIRAL CONTROL
申请人:WAVE LIFE SCIENCES PTE. LTD.
公开号:US20150211006A1
公开(公告)日:2015-07-30
The present invention relates to chirally controlled oligonucleotides, chirally controlled oligonucleotide compositions, and the method of making and using the same. The invention specifically encompasses the identification of the source of certain problems with prior methodologies for preparing chiral oligonucleotides, including problems that prohibit preparation of fully chirally controlled compositions, particularly compositions comprising a plurality of oligonucleotide types. In some embodiments, the present invention provides chirally controlled oligonucleotide compositions. In some embodiments, the present invention provides methods of making chirally controlled oligonucleotides and chirally controlled oligonucleotide compositions.