Journal
TETRAHEDRON
Volume 103, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2021.132206
Keywords
alpha-amino acids skeleton; Urea; Isatin-derived ketimines; N,N '-ketals
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Funding
- National Natural Science Foundation of China [51373067]
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An asymmetric synthesis method for N,N'-ketal compounds derived from isatin-derived ketimines and aryl amines has been developed using an inexpensive and readily available L-tert-leucine derived urea catalyst, resulting in high yields with high enantioselectivities.
An asymmetric synthesis of N,N'-ketal compounds derived from isatin-derived ketimines and aryl amines has been developed using an inexpensive and readily available L-tert-leucine derived urea catalyst. Using this asymmetric catalytic synthetic method, a series of 3-substituted 3-amino-2-oxoindole derivatives containing an N,N'-ketal motif were obtained in high yields with high enantioselectivities. (C) 2021 Elsevier Ltd. All rights reserved.
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