2-Thiophenemethanol → HCID 22127948, compound

Participants

Reaction Steps

In an analogous manner to that described in Example 1 (g), by alkylating tert-butyl (RS)-2-(3-bromo-propoxy)-tetrahydro-pyran with 2-hydroxymethyl-thiophene in DMF there was obtained (RS)-2-[3-(thiophen-2-ylmethoxy)-propoxy]-tetrahydro-pyran, which after cleavage of the THP group analogously to Example 53 (c), yielded 3-(thiophen-2-ylmethoxy)-propan-1-ol. Subsequent conversion into the mesylate according to a procedure known from the literature and alkylation effected with the latter analogously to Example 44 (e) of tert-butyl (3RS,4RS)-3-hydroxy-4-(4-hydroxy-phenyl)-piperidine-1-carboxylate gave tert-butyl (3RS,4RS)-3-hydroxy-4-[4-[3-(thiophen-2-ylmethoxy)-propoxy]-phenyl]-piperidine-1-carboxylate. By alkylation with 2-chloromethyl-1,4-dimethoxy-naphthalene analogously to Example 1 (g) there was obtained (3RS,4RS)-3-(1,4-dimethoxy-naphthalen-2-ylmethoxy)-4-{4-[3-(thiophen-2-ylmethoxy)-propoxy]-phenyl}-piperidine-1-carboxylate as a pale yellow resin; MS: 648 (M+H)+.

Provenance & Evidence