Dicyclohexylcarbodiimide → (RS)-2-(5-Phenyl-[1,3,4]oxadiazol-2-ylmethyl)-piperidine-1-carboxylic acid tert butyl ester

HRID 30163

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[CH2:14][C:15]([OH:17])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].C1(N=C=NC2CCCCC2)CCCCC1.[C:33]1([C:39]2NN=[N:41][N:40]=2)[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1>C1(C)C=CC=CC=1.C(OCC)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[CH2:14][C:15]1[O:17][C:39]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)=[N:40][N:41]=1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 2carboxymethyl-piperidine-1-carboxylic acid tert butyl ester (1.22 g), (Peschke, Bernd; Ankersen, Michael; Hansen, Birgit Sehested; Hansen, Thomas Kruse; Johansen, Nils Langeland; Lau, Jesper; Madsen, Kjeld; Petersen, Hans; Thogersen, Henning; Watson, Brett. Eur. J. Med. Chem. (1999), 34(5), 363-380), dicyclohexylcarbodiimide (1.05 g) and 5-phenyltetrazole (0.73 g) in toluene (25 ml) was heated at 100° C. for 3 h. The reaction mixture was cooled to room temperature, diluted with diethyl ether and solvent decanted from the precipitated gum. The gum was column chromatographed (silica gel, 0-50% ethyl acetate in pentane eluant) to give the title compound (1.1 g).

Workup

temperatureThe reaction mixture was cooled to room temperature
customdecanted from the precipitated gum
customchromatographed (silica gel, 0-50% ethyl acetate in pentane eluant)

Sources & evidence

ORD record: ord-41b75ded3f14474c870fb3bc7d04222c
Source dataset: uspto-grants-2008_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07423052B2

Linked notes

Loading…