Benzylamine, N,N-bis(2-chloroethyl)-p-chloro- → 4-(4-But-2-ynyloxy-benzenesulfonyl)-1-(4-chloro-benzyl)-piperdine-4-carboxylic acid ethyl ester

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Reaction Steps

4-(4-But-2-ynyloxy-benzenesulfonyl)-1-(4-chloro-benzyl)-piperdine-4-carboxylic acid ethyl ester was prepared according to the general method as outlined in Example 1 (Step 6). Starting from (4-but-2-ynyloxy-benzenesulfonyl)-acetic acid ethyl ester (4 g, 13.5 mmol) and (4-chloro-benzyl)-bis-(2-chloro-ethyl)-amine (4.9 g, 16.2 mmol). Yield 3.5 g (53%); white crystals; MP 91.8° C.; MS: 490 (M+H)+

Provenance & Evidence