Synthesis of sulfonamides via copper-catalyzed oxidative C–N bond cleavage of tertiary amines
作者:Jing Ji、Zhengyi Liu、Ping Liu、Peipei Sun
DOI:10.1039/c6ob01208f
日期:——
A copper-catalyzed coupling reaction of sulfonyl chlorides with tertiaryamines via the oxidative C–N bond cleavage of tertiaryamines was developed. Sulfonamides were synthesized using this strategy in moderate to good yields. The reaction was applicable to various tertiaryamines, as well as sulfonyl chlorides.
Nucleophilic C–H Etherification of Heteroarenes Enabled by Base-Catalyzed Halogen Transfer
作者:Thomas R. Puleo、Danielle R. Klaus、Jeffrey S. Bandar
DOI:10.1021/jacs.1c06481
日期:2021.8.18
for the direct C–H etherification of N-heteroarenes. Potassium tert-butoxide catalyzes halogen transfer from 2-halothiophenes to N-heteroarenes to form N-heteroaryl halide intermediates that undergo tandem base-promoted alcohol substitution. Thus, the simple inclusion of inexpensive 2-halothiophenes enables regioselective oxidative coupling of alcohols with 1,3-azoles, pyridines, diazines, and polyazines
Facile One-Pot Synthesis of Aromatic and Heteroaromatic Sulfonamides
作者:Rina Pandya、Takashi Murashima、Livio Tedeschi、Anthony G. M. Barrett
DOI:10.1021/jo034643j
日期:2003.10.1
A series of arene and heteroarene sulfonamides were prepared in one vessel from aryl and heteroaryl bromides via conversion into the corresponding Grignardreagents using either magnesium or isopropylmagnesium chloride and subsequent reaction with sulfur dioxide, sulfuryl chloride, and an amine.
<i>para</i>-Selective Alkylation of Sulfonylarenes by Cooperative Nickel/Aluminum Catalysis
作者:Shogo Okumura、Yoshiaki Nakao
DOI:10.1021/acs.orglett.6b03741
日期:2017.2.3
A method for the para-selective alkylation of a variety of arenesulfonamides and aromatic sulfones with 1-alkenes by cooperative nickel/aluminum catalysis has been developed. Taking advantage of the sulfornyl functionality serving as a removable ortho-directing group, the reaction can be applied to facile access to 1,3-dialkyl-substitued benzenes.
Short-step and scalable transformations from 2,6-dibromopyridine to 6-bromopyridine-2-sulfonamide by means of halogen-metal exchange and subsequent reaction with sulfuryl chloride followed by amidation are established. Application of the method for the synthesis of various pyridine sulfonamides is also described.