Catalytic enantioselective aza-Reformatsky reaction with seven-membered cyclic imines dibenzo[b,f][1,4]oxazepines

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Catalytic enantioselective aza-Reformatsky reaction with seven-membered cyclic imines dibenzo[b,f][1,4]oxazepines

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	De Munck, Lode; Sukowski, Verena; Vila Descals, Carlos; Muñoz, M. Carmen; Pedro, José Ramón
	This document is a artículoDate2017
	Contiene
	A catalytic enantioselective aza-Reformatsky reaction is reported with cyclic dibenzo[b,f][1,4]oxazepines and ethyl iodoacetate leading to the synthesis of chiral ethyl 2-(10,11-dihydrodibenzo[b,f][1,4]oxazepin-11-yl)acetate derivatives with excellent yields and high enantioselectivities (up to 98% yield and 97 : 3 er) using a readily available diaryl prolinol L4 as the chiral ligand and Me2Zn as the zinc source under an air atmosphere. Furthermore, different transformations were carried out with the corresponding chiral β-amino esters, preserving in all cases the optical purity.
	De Munck, Lode Sukowski, Verena Vila Descals, Carlos Muñoz, M. Carmen Pedro, José Ramón 2017 Catalytic enantioselective aza-Reformatsky reaction with seven-membered cyclic imines dibenzo[b,f][1,4]oxazepines Organic Chemistry Frontiers 4 8 1624 1628
	https://doi.org/10.1039/C7QO00329C

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