I<sub>2</sub>/TBHP Mediated C–N and C–H Bond Cleavage of Tertiary Amines toward Selective Synthesis of Sulfonamides and β-Arylsulfonyl Enamines: The Solvent Effect on Reaction
作者:Junyi Lai、Liming Chang、Gaoqing Yuan
DOI:10.1021/acs.orglett.6b01412
日期:2016.7.1
A novel method toward synthesis of sulfonamides and β-arylsulfonyl enamines has been developed via I2/TBHP mediated C–N and C–H bond cleavage of tertiaryamines, which features highly selective formation of two different target products depending on the reaction solvent. The experimental results reveal that H2O as the solvent could effectively achieve the C–N bond cleavage to produce sulfonamides due
COMPOUND OR ITS TAUTOMER, METAL COMPLEX COMPOUND, COLORED PHOTOSENSITIVE CURING COMPOSITION, COLOR FILTER, AND PRODUCTION
申请人:MIZUKAWA Yuki
公开号:US20120238752A1
公开(公告)日:2012-09-20
Provided is a colored photosensitive curing composition useful for color filters in primary colors, including blue, green, and red, having a high molar absorption coefficient and allowing a reduction in film thickness and superior color purity and fastness.
A colored photosensitive curing composition, comprising, as its colorant, a dipyrromethene-based metal complex compound obtained from a metal or metal compound and a dipyrromethene-based compound represented by the following Formula (I):
wherein in Formula (I), R
1
to R
6
each independently represent a hydrogen atom or a substituent group; and R
7
represents a hydrogen or halogen atom, or an alkyl, aryl or heterocyclic group.
Iodine-catalyzed sulfonylation of sulfonyl hydrazides with <i>tert</i>-amines: a green and efficient protocol for the synthesis of sulfonamides
作者:Jinyang Chen、Xiaoran Han、Lan Mei、Jinchuan Liu、Kui Du、Tuanwu Cao、Qiang Li
DOI:10.1039/c9ra07361b
日期:——
This study provides a direct, sustainable and eco-friendly method for the synthesis of various sulfonamides via the sulfonylation of sulfonyl hydrazides with tert-amines. The method utilizes sulfonyl hydrazides to oxidize and couple with tertiary amines through selective cleavage of C–N bonds. In this reaction, molecular iodine was used as the catalyst and t-butyl hydroperoxide was used as the oxidant
A mild, practical, and environmentally friendly route to vinyl sulfones and sulfonamides has been developed based on the reaction of aliphaticamines with arenesulfonyl chlorides in the presence of eosin Y as a photocatalyst under visible light. The method permits the selective formation of vinyl sulfones or sulfonamides, depending on the oxidation environment and solvent. A wide range of products