794553-01-8Relevant articles and documents
Facile synthesis of 4-acylamino and 4-sulphonamido β-lactams
Thiagarajan,Puranik,Deshmukh,Bhawal
, p. 7811 - 7816 (2007/10/03)
The cycloaddition reaction of trisubstituted amidines (7a-f) with acid chlorides in presence of triethylamine gave 4-acylamino and 4-sulphonamido-trans-β-lactams (9a-h) in very good yields. Similarly N,N'-diarylamidines (5a-d) on reaction with 2 equiv. of acid chlorides (8a,b) gave 4-acylamino-trans-β-lactams (10a-e) via in situ generated acylamidines followed by cycloaddition reaction. (C) 2000 Elsevier Science Ltd.