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Irfana Jesin C. P. Dr. Ganesh Chandra Nandi 《Chemistry (Weinheim an der Bergstrasse, Germany)》2019,25(3):743-749
Sulfonimidamides (SIAs) are acting both as surrogate amines and nucleophiles depending on the reaction conditions to access propargylamines and N-propargyl SIAs, respectively. The amine part of SIAs has been cleaved in an InCl3-catalyzed three-component A3 coupling reaction with aldehyde and acetylene to yield propargylamine. Moreover, N-propargyl SIAs were obtained via the direct-imination of propargyl alcohols in the presence of BF3⋅OEt2. 相似文献
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Nidhin Paul Selvam Kaladevi Arockiam Jesin Beneto Shanmugam Muthusubramanian Nattamai Bhuvanesh 《Tetrahedron》2012,68(34):6892-6901
Synthesis of a set of isomeric 2,4,6-triarylmorpholines and 2,6-diaryloxathianes from the corresponding 1,5-diols has been described. The method provides an efficient route to six-membered heterocycles from acyclic diols and is found to be better than Mitsunobu procedure in yield and waste management. In a related study, the ring contraction of pyranone to two isomeric cyclopentenone derivatives through Nazarov reaction has been noticed. 相似文献
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Ponmuthu Kottala Vijaya Kumaraguru Duraimurugan Arockiam Jesin Beneto Velu Sadhasivam Sepperumal Murugesan Ayyanar Siva 《Research on Chemical Intermediates》2016,42(12):8345-8358
The present work describes the C-alkylation reactions of fluorene and curcumin catalyzed by a new phosphonium salt, benzene-1,3,5-triyltris(methylene))tris(triphenylphosphonium)bromide, as a multi-site phase-transfer catalyst (MPTC). The catalytic efficiencies were found to be quite effective for di- and tetra-alkylation reactions with very excellent yields under mild base and low concentrations of the catalyst. The synthesized MPTC 3 have privileged catalytic activity compared to commercially available single-site phase-transfer catalysts.
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