58202-72-5Relevant academic research and scientific papers
Direct Iodosulfonylation of Alkylynones with Sulfonylhydrazides and Iodine Pentoxide Leading to Multisubstituted α,β-Enones
Cui, Huanhuan,He, Chenglong,Yang, Daoshan,Yue, Huilan,Wei, Wei,Wang, Hua
, p. 830 - 834 (2018)
A facile and efficient method has been developed for the construction of multisubstituted α,β-enones through the direct selective iodosulfonylation of alkylynones with sulfonylhydrazides and iodine pentoxide. The present methodology offers a simple and attractive approach to various multisubstituted α,β-enones in moderate to good yields with excellent stereo- and regioselectivities under the metal- and peroxide-free conditions.
Iodosulfonylation of Alkynes under Ultrasound Irradiation
Zhou, Chuanjiang,Zeng, Xianghua
, p. 4614 - 4620 (2021/09/13)
(E)-Iodo vinylsulfones are synthesized under ultrasound irradiation using alkynes, sulfonyl hydrazides, potassium iodide and hydrogen peroxide. The key features of this protocol are the speed and efficiency of the reactions, which afford good to excellent
Electrochemical Induced Regio- and Stereoselective Difunctionalization of Alkynes: The Synthesis of (E)-β-Iodovinyl Sulfones
Zhang, Xinghua,Lu, Danna,Wang, Zhenwei
supporting information, p. 4284 - 4287 (2021/06/16)
An efficient, green, and oxidant-free electrochemical method for alkyne difunctionalization was described. Using undivided electrochemical cell for iodosulfonylation of alkynes with commercially available iodide radical (NaI), arylsulfonyl radical (ArSOs
Synthesis of (E)-iodo vinylsulfones via oxidative addition of thiol into alkyne under metal free condition
Samanta, Surya Kanta,Sarkar, Rumpa,Bera, Mrinal K.
, (2021/07/12)
An efficient, transition-metal free and molecular iodine promoted protocol for the construction of (E)-β-iodovinyl sulfone derivatives via oxidative C–S coupling of thiol and alkyne has been demonstrated. Both aryl and alkyl terminal acetylenes were found to be an excellent substrate for the present reaction which provides a wide range of β-iodovinyl sulfone derivatives with very good yield and excellent regio and stereo-selectivities. Diaryldisulfide is also found to be an equally efficient sulfonyl group surrogate under identical reaction conditions.
An iodine-mediated new avenue to sulfonylation employingN-hydroxy aryl sulfonamide as a sulfonylating agent
Raghuvanshi, Dushyant Singh,Verma, Narsingh
supporting information, p. 4760 - 4767 (2021/06/09)
A novel and highly efficient I2/K2CO3mediated regioselective sulfonylation of thiophenols, aryl acetylenic acid and aromatic alkynes withN-hydroxy sulfonamide has been developed.N-hydroxy sulfonamide has been used for the first time for the synthesis of these sulfones. The scope and versatility of the reaction has been demonstrated by the regio- and stereoselective synthesis of different analogs of sulfones with various structural features.
Introduction of N,N'-disulfonylhydrazines as new sulfonylating reagents for highly efficient synthesis of (E)-β-iodovinyl arenesulfones under mild conditions
Luo, Dongping,Min, Lin,Zheng, Weiping,Shan, Lidong,Wang, Xinyan,Hu, Yuefei
, p. 1877 - 1880 (2020/01/21)
N,N'-Disulfonylhydrazines have been proven to be the most reactive precursors of the sulfonyl radicals among all types of sulfonyl substituted hydrazines as early as half a century ago. However, the sulfonyl radicals generated from these compounds have no
Pd-Catalyzed Annulation of β-Iodovinyl Sulfones with 2-Halophenols: A General Route for the Synthesis of 3-Sulfonyl Benzofuran Derivatives
Krishna, Gamidi Rama,Kumar, Jangam Jagadesh,Kumari, Arram Haritha,Reddy, Raju Jannapu
supporting information, (2020/03/04)
The palladium-catalyzed annulation between β-iodovinyl sulfones and 2-halophenols or 1-bromo-2-naphthol or 2-bromo-3-pyridinol is presented. The annulation process involving oxa-Michael addition-elimination and intramolecular Heck reaction leading to form
Unprecedented Reactivity of β-Iodovinyl Sulfones: An Efficient Synthesis of β-Keto Sulfones and β-Keto Thiosulfones
Reddy, Raju Jannapu,Kumar, Jangam Jagadesh,Kumari, Arram Haritha
supporting information, p. 3771 - 3775 (2019/06/24)
An unprecedented reactivity of (E)-β-iodovinyl sulfones in the presence of NaOAc is reported. The (E)-β-iodovinyl sulfones were treated with NaOAc in DMSO/H2O to yield β-keto sulfones in moderate to high yields. A novel oxidative difunctionalization of β-iodovinyl sulfones with thiosulfonates and NaOAc in DMF has been developed. This metal-free oxosulfenylation is an operationally simple to access a wide range of β-keto thiosulfones (α-thioaryl-β-keto sulfones) in moderate to high yields. The transformations were reliable at gram-scale, thus illustrating its efficiency and practicality. A plausible mechanism for the protocol is also proposed.
Synthetic method of beta-iodo-alkenyl sulfone compound
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Paragraph 0053; 0054; 0055, (2019/01/07)
The invention discloses a synthetic method of a beta-iodo-alkenyl sulfone compound. The synthesis method comprises the following steps: mixing an alkyne derivative, a sulfonyl hydrazine derivative, iodine pentoxide and a solvent to obtain a mixed solution
Iodine promoted iodosulfonylation of alkynes with sulfonyl hydrazides in an aqueous medium: Highly stereoselective synthesis of (E)-β-iodo vinylsulfones
Hou, Yunlei,Zhu, Liangyu,Hu, Hao,Chen, Shaowei,Li, Zefei,Liu, Yajing,Gong, Ping
supporting information, p. 8752 - 8755 (2018/06/08)
A catalyst-free and metal-free sulfonylation reaction for the preparation of (E)-β-iodo vinylsulfones from alkynes with sulfonyl hydrazides and molecular iodine was efficiently developed under mild and environmentally benign conditions, in water without any ligand or catalyst. The reaction gave a range of structurally diverse β-iodo vinylsulfones with excellent E selectivities and high yields.
