Triethylamine → (3R,4R)-3-[1-(2-methanesulfonylamino-ethyl)-1,2,3,4-tetrahydro-quinolin-7-ylmethoxy]-4-[4-[3-(2-methoxy-benzyloxy)-propoxy]-phenyl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1531512Notes

Reaction equation

HRID 1531512 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH2:21][CH2:22][CH2:23][O:24][CH2:25][C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=3[O:32][CH3:33])=[CH:16][CH:15]=2)[C@@H:10]([O:34][CH2:35][C:36]2[CH:45]=[C:44]3[C:39]([CH2:40][CH2:41][CH2:42][N:43]3[CH2:46][CH2:47][NH2:48])=[CH:38][CH:37]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:56][S:57](Cl)(=[O:59])=[O:58]>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH2:21][CH2:22][CH2:23][O:24][CH2:25][C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=3[O:32][CH3:33])=[CH:16][CH:15]=2)[C@@H:10]([O:34][CH2:35][C:36]2[CH:45]=[C:44]3[C:39]([CH2:40][CH2:41][CH2:42][N:43]3[CH2:46][CH2:47][NH:48][S:57]([CH3:56])(=[O:59])=[O:58])=[CH:38][CH:37]=2)[CH2:9]1)=[O:7])([CH3:3])([CH3:2])[CH3:4]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 69486181(3R,4R)-3-[1-(2-amino-ethyl)-1,2,3,4-tetrahydro-quinolin-7-ylmethoxy]-4-[4-[3-(2-methoxy-benzyloxy)-propoxy]-phenyl]-piperidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 69489460(3R,4R)-3-[1-(2-methanesulfonylamino-ethyl)-1,2,3,4-tetrahydro-quinolin-7-ylmethoxy]-4-[4-[3-(2-methoxy-benzyloxy)-propoxy]-phenyl]-piperidine-1-carboxylic acid tert-butyl esterYield 88.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To an ice-cooled solution of 0.250 g (0.379 mmol) (3R,4R)-3-[1-(2-amino-ethyl)-1,2,3,4-tetrahydro-quinolin-7-ylmethoxy]-4-[4-[3-(2-methoxy-benzyloxy)-propoxy]-phenyl]-piperidine-1-carboxylic acid tert-butyl ester [example 15(b)] and 0.049 g (0.493 mmol, 1.3 equiv.) triethylamine in 5 ml of dichloromethane was added dropwise at 0° C. 0.047 g (0.417 mmol, 1.1 equiv.) methanesulfonyl chloride. After stirring for 30 min at 0° C., the reaction mixture was poured into 50 ml of an ice/water mixture and extracted three times with 50 ml of ethyl acetate. The combined organic phases were washed twice with 25 ml of water, evaporated under reduced pressure and dried in a high vacuum. The thus obtained crude product was purified by chromatography on silica gel using a 1:2 v/v mixture of hexane and ethyl acetate as eluent to yield 0.247 g (0.335 mmol, 88.3% of theory) of (3R,4R)-3-[1-(2-methanesulfonylamino-ethyl)-1,2,3,4-tetrahydro-quinolin-7-ylmethoxy]-4-[4-[3-(2-methoxy-benzyloxy)-propoxy]-phenyl]-piperidine-1-carboxylic acid tert-butyl ester as a light yellow oil; MS: 736 (M+H)+.

Workup

  1. additionwas added dropwise at 0° C
  2. extractionextracted three times with 50 ml of ethyl acetate
  3. washThe combined organic phases were washed twice with 25 ml of water
  4. customevaporated under reduced pressure
  5. customdried in a high vacuum
  6. customThe thus obtained crude product
  7. customwas purified by chromatography on silica gel using
  8. additiona 1:2 v/v mixture of hexane and ethyl acetate as eluent

Sources & evidence

ORD record
ord-c336d267762d4860a7169e8481f4a303
Source dataset
uspto-grants-2001_03
Patent number
US06197959B1

Reaction notes

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