N,N-dimethylchlorosulfitemethaniminium chloride as a cyclodehydrating agent: An efficient one-pot preparation of 4-methyl-2-phenyl-Δ2-oxazolin-5-one and its reactions with various imines and bis-imines
N,N-Dimethylchlorosulfitemethaniminium chloride prepared from thionylchloride and dimethylformamide in dry benzene at ambient temperature was found to be an efficient and mild cyclodehydrating agent of N-benzoyl amino acids for the synthesis of various β-
Singh, Satyendra P,Prajapati, Dipak,Sandhu, Jagir S
p. 1033 - 1036
(2007/10/02)
Cycloaddition reactions of meso-ionic oxazolone with with cinnamaldehyde anils
During the reaction of the azlactone 5 with different cinnamaldehyde anils, we obtained α-pyridones with no evidence for the formation of β-lactams.The products have been characterized through elemental and spectral analyses.
Sain, Bir,Thyagarajan, Gopalakrishna,Sandhu, Jagir S.
p. 2034 - 2037
(2007/10/02)
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