2-Thiophenesulfonyl chloride → 8-chlorodibenz[b,f][1,4]oxazepine-10(11H)carboxylic acid

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Reaction Steps

8-chlorodibenz[b,f][1,4]oxazepine-10(11H)-carboxylic acid, 2-[1-oxo-3-[(2-thienylsulfonyl)amino]propyl hydrazide (30) was prepared from 8-chlorodibenz[b,f][1,4]oxazepine-10(11H)-carboxylic acid, 2-(3-amino-1-oxopropyl)hydrazide, monohydrochloride (9), prepared as described above in Example 9, and 2-thiophenesulfonyl chloride in the same manner as described in Example 10 on a 1.9 mmol scale to yield 0.48 g (50%) of product. Analysis calculated for C21H19N4O5ClS2 (M.W. 506.99): C, 49.26; H, 4.36; N, 12.77; Cl, 6.99; S, 12.65. Found: C, 49.05; H, 4.40: N, 12.66; Cl, 7.13; S, 12.88.

Provenance & Evidence