Chemical Abstract 211280h, vol. 91, No. 26 (24 Dec. 79) and Reg. No. 71978-18-2 (13 Jun. 79); and Derwent Abstract 55102b. |
Chemical Abstract 221701e, vol. 108, No. 25 (20 Jun. 88), and Reg. No. 114560-96-2 and Reg. No. 114560-71-3 (21 Oct. 87). |
Chemical Abstract 204453h, vol. 18, No. 14, (4 Apr. 88), and Reg. NO. 114125-87-0. |
Chupp and Metz, Heterocycles from Substituted Amides, VI (1,2). J. heterocyclic Chem., 16. pp. 65-71, 1979. |
Chemical Abstract 92023s, vol. 79, 1973. |
Hayes, et al., J. Chem. Research(s) 414, (1980). |
Meth-Cohn et al., J.C.S. Perkin I 1520 (1981). |