SEARCH Articles Figures Tables 0-Lactams, from chlorosulfonyl isocyanate 3-lactams => isocyanates Chlorosulfonyl Chlorosulfonyl isocyanate Chlorosulfonylation From isocyanates From lactams Isocyanates, preparation Isocyanates, preparation from Lactam preparation Lactams Chlorosulfonyl isocyanate Lactams, preparation Lactams, preparation from