General Strategy for Stereoselective Synthesis of β-<i>N</i>-Glycosyl Sulfonamides via Palladium-Catalyzed Glycosylation
作者:Yuanwei Dai、Jianfeng Zheng、Qiang Zhang
DOI:10.1021/acs.orglett.8b01506
日期:2018.7.6
A highly efficient and mild glycosylation reaction between 3,4-O-carbonate glycal and N-tosyl functionalized aliphatic and aromatic amines via palladium-catalyzed decarboxylative allylation is disclosed. A wide range of highly functionalized 2,3-unsaturated β-N-glycosides are furnished in good to excellent yields and complete regioselectivity and stereoselectivity. In addition, applications of the
申请人:Sumitomo Chemical Takeda Agro Company, Limited
公开号:US06586617B1
公开(公告)日:2003-07-01
The present invention relates to microbicides for agricultural or horticultural use containing a sulfonamide derivative.
本发明涉及包含磺酰胺衍生物的用于农业或园艺的杀微生物剂。
Pd-Catalyzed desulfitative arylation of olefins by <i>N</i>-methoxysulfonamide
作者:Subhadra Ojha、Niranjan Panda
DOI:10.1039/d1ob02360h
日期:——
A novel Pd-catalyzed protocol for the desulfitative Heck-type reaction of N-methoxy aryl sulfonamides with alkenes was reported. The cross-coupling reaction was performed successfully with a variety of olefins to obtain aryl alkenes. Different substituents on the aromatic ring of N-methoxysulfonamides were also found to be compatible with the reaction conditions. Expectedly, the reaction proceeds through
Regioselective Ortho Olefination of Aryl Sulfonamide via Rhodium-Catalyzed Direct C–H Bond Activation
作者:Weijia Xie、Jie Yang、Baiquan Wang、Bin Li
DOI:10.1021/jo5015239
日期:2014.9.5
Rh(III)-catalyzed orthoC–H olefination of aryl sulfonamide directed by the SO2NHAc group is reported. This oxidative coupling process is achieved highly efficiently and selectively with a broad substrate scope. The reactions of N-tosylacetamide with acrylate esters afford ortho-alkenylated benzofused five-membered cyclic sulfonamides, whereas styrenes provide the direct diolefination products.
Highly efficient synthesis of aryl ketones by PEPPSI-palladium catalyzed acylative Suzuki coupling of amides with diarylborinic acids
作者:Chen Wang、Lingyun Huang、Fengze Wang、Gang Zou
DOI:10.1016/j.tetlet.2018.05.003
日期:2018.6
An improved acylative cross-coupling of various N-methyl-N-tosyl amides with diarylborinic acids for synthesis of aryl ketones is developed. In most cases, aryl ketones could be obtained in excellent yields by using 1 mol% 2,6-diisopropylphenylimidazolylidene and 3-chloropyridine co-supported palladium chloride as catalyst in the presence of 3 equiv. K2CO3 as base in refluxing THF. The readily prepared
已开发了用于合成芳基酮的各种N-甲基-N-甲苯磺酰基酰胺与二芳基硼酸的改进的酰基交叉偶联。在大多数情况下,在3当量的存在下,通过使用1mol%的2,6-二异丙基苯基咪唑基亚甲基和3-氯吡啶共负载的氯化钯作为催化剂,可以以优异的产率获得芳基酮。在回流的THF中,以K 2 CO 3为碱。容易制备且具有成本效益的底物,N-甲基-N-甲苯磺酰胺和二芳基硼酸,以及可商购的催化剂体系,保证了实用和有效地获得芳基酮。