Res Chem Intermed (2016) 42:7533–7549 DOI 10.1007/s11164-016-2551-6 An efﬁcient and green La(OTf) catalyzed Petasis borono–Mannich reaction for the synthesis of tertiary amines 1 2 • • Bijivemula N. Reddy Chinthaparthi Radha Rani 1 1 S. M. Reddy Madhvesh Pathak Received: 7 February 2016 / Accepted: 18 April 2016 / Published online: 13 May 2016 Springer Science+Business Media Dordrecht 2016 Abstract A variety of tertiary amine derivatives have been prepared by a one-pot three- component Petasis borono–Mannich reaction of two different salicylaldehydes and 2-formylpyridine, substituted morpholine/piperidines and aryl boronic acids. These reactions were carried out under microwave irradiation using a catalytic amount of La(OTf) in a short reaction time. This procedure has the advantages of high conversions with excellent chemoselectivity. Graphical Abstract The attractive features of this methodology are simple procedure, green reaction, reusability and high efﬁciency of the catalyst and easy workability. & Madhvesh Pathak firstname.lastname@example.org School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India Department of Chemistry, Sri Venkateswara Degree and PG College, Kadapa, Andhra Pradesh 516003, India 123 7534 B. N. Reddy et al. Keywords 4-(5-methyl-2-phenyl-2H-1,2,4-triazol-3-yl) piperidine La(OTf) 2-hydroxybenzaldehyde PBM reaction Introduction Natural products, pharmaceutical agents and synthetic materials contain amine
Research on Chemical Intermediates – Springer Journals
Published: May 13, 2016
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