Cobalt(II)-Catalyzed Isocyanide Insertion Reaction with Sulfonyl Azides in Alcohols: Synthesis of Sulfonyl Isoureas
作者:Tian Jiang、Zheng-Yang Gu、Ling Yin、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/acs.joc.7b01127
日期:2017.8.4
A Co(II)-catalyzed isocyanide insertion reaction with sulfonyl azides in alcohols to form sulfonyl isoureas via nitrene intermediate has been developed. This protocol provides a new, environmentally friendly, and simple strategy for the synthesis of sulfonyl isoureaderivatives by employing a range of substrates under mild conditions.
Cobalt(II)-Catalyzed Bis-isocyanides Insertion Reactions with Boric Acids and Sulfonyl Azides <i>via</i>
Nitrene Radical Coupling
作者:Zheng-Yang Gu、Rong Zhang、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1002/cjoc.201800307
日期:2018.11
A Co(II)‐catalyzed effective synthesis of amidinium imine derivatives from the reaction of isocyanides and boric acids using organic azides as nitrene source has been developed. This protocol provides a new, environment‐friendly and simple strategy to construct amidinium imine derivatives with a range of substrates without any oxidants and additives.
3-AMINOIMIDAZO 1,2-A PYRIDINE DERIVATIVES HAVING AN SGLT1- AND SGLT2-INHIBITING ACTION FOR THE TREATMENT OF TYPE 1 AND TYPE 2 DIABETES
申请人:Klein Markus
公开号:US20100305142A1
公开(公告)日:2010-12-02
Novel compounds of the formula (I), in which W, T, R
1
, R
2
, R
3
, R
4
, R
5
and R
6
have the meanings indicated in Patent Claim (
1
), are suitable as antidiabetics.
TiCl4-Mediated Synthesis of 3,4-Hetero-Disubstituted Isocoumarins by Means of Isocyanide Insertion Reactions
作者:Laurent El Kaïm、Laurence Grimaud、Maxime Vitale、Sudipta Ponra、Aude Nyadanu、Sylvie Maurin
DOI:10.1055/s-0036-1591733
日期:2018.3
Abstract The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported with full details. This sequential three-component reaction affords a new straightforward and highly convenient method for the preparation of 3-amino-4-sulfanyl isocoumarins, the potential of which is still unexplored. The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported
A highly enantioselective isocyanide-based multicomponent reaction catalyzed by a chiral N,N′-dioxide/MgII complex was reported. A wide range of substrates were tolerated in this reaction, including alkyl- and aryl-substituted isocyanides with alkylidene malonates and various phenols, affording the corresponding phenoxyimidate products in good to excellent yields (up to 94% yield) with good to excellent
报道了一种由手性N , N ' -二氧化物 / Mg II 配合物催化的高对映选择性异氰化物基多组分反应。在该反应中可以耐受多种底物,包括烷基和芳基取代的异氰化物与亚烷基丙二酸酯和各种酚,以良好至极好的产率(高达 94% 的产率)提供相应的苯氧基亚胺酸酯产物,具有良好至极好的对映选择性(高达到 95.5: 4.5 er)。提出了催化循环和过渡态来合理化反应过程和对映控制。