Trityl chloride → tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxy-5-trityloxymethyl-piperidine-1-carboxylate

HRID 1005229Notes

Reaction equation

HRID 1005229 reaction equation
[CH2:1]([O:8][CH2:9][CH2:10][CH2:11][O:12][C:13]1[CH:18]=[CH:17][C:16]([CH:19]2[CH:24]([CH2:25][OH:26])[CH2:23][N:22]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:21][CH:20]2[OH:34])=[CH:15][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:35]1([C:41]([C:49]2[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=2)([C:43]2[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=2)Cl)[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1>N1C=CC=CC=1>[CH2:1]([O:8][CH2:9][CH2:10][CH2:11][O:12][C:13]1[CH:18]=[CH:17][C:16]([CH:19]2[CH:24]([CH2:25][O:26][C:41]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)([C:49]3[CH:50]=[CH:51][CH:52]=[CH:53][CH:54]=3)[C:43]3[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=3)[CH2:23][N:22]([C:27]([O:29][C:30]([CH3:31])([CH3:33])[CH3:32])=[O:28])[CH2:21][CH:20]2[OH:34])=[CH:15][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 6456Trityl chlorideHCID 86604522tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxy-5-hydroxymethyl-piperidine-1-carboxylate

Product 1

HCID 86604523tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxy-5-trityloxymethyl-piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

In an analogous manner to that described in Example 22 (h), by reacting tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxy-5-hydroxymethyl-piperidine-1-carboxylate with triphenylchloromethane in pyridine there was obtained tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxy-5-trityloxymethyl-piperidine-1-carboxylate, [MS: 731 (M+NH4)+ ], as a colourless foam, alkylation of which with 2-bromomethyl-naphthalene analogously to Example 62 (h) gave tert-butyl (3RS,4RS,5SR)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-(naphthalen-2-ylmethoxy)-5-trityloxymethyl-piperidine-1-carboxylate, [MS: 871 (M+NH4)+ ], as a colourless foam. Subsequent selective cleavage of the trityl group by means of a mixture of trifluoroacetic acid and trifluoroacetic anhydride in methylene chloride analogously to Example 86 (u) yielded tert-butyl (3SR,4RS,5RS)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-hydroxymethyl-5-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylate as a colourless solid; MS: 612 (M+H)+. Subsequent alkylation with methyl iodide analogously to Example 62 (h) gave tert-butyl (3SR,4RS,5RS)-4-[4-(3-benzyloxy-propoxy)-phenyl]-3-methoxymethyl-5-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylate as a colourless solid; MS: 626 (M+H)+.

Sources & evidence

ORD record
ord-5b6f5f6ebda441d683fda2d4b27dc15c
Source dataset
uspto-grants-2000_04
Patent number
US06051712

Reaction notes

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