Isopropylamine → (3S*,4R)-3-(tert-butyl-dimethyl-silanyloxymethyl)-4-(isopropylamino-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1158354Notes

Reaction equation

HRID 1158354 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH:13]=O)[C@H:10]([C:15]([CH3:23])([CH3:22])[O:16][SiH2:17][C:18]([CH3:21])([CH3:20])[CH3:19])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:24]([NH2:27])([CH3:26])[CH3:25].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].CC#N.O>ClCCCl.O.CC#N>[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH2:13][NH:27][CH:24]([CH3:26])[CH3:25])[C@H:10]([C:15]([CH3:23])([CH3:22])[O:16][SiH2:17][C:18]([CH3:20])([CH3:19])[CH3:21])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

8

Reactant 4

HCID 6363IsopropylamineHCID 5049666Sodium triacetoxyborohydrideHCID 18373917Acetonitrile--water (1/1)HCID 131728359(3S*,4S*)-3-(tert-Butyl-dimethyl-silanyloxymethyl)-4-formyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 131728361(3S*,4R)-3-(tert-butyl-dimethyl-silanyloxymethyl)-4-(isopropylamino-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 3

HCID 111,2-DichloroethaneSolventHCID 962WaterSolventHCID 6342AcetonitrileSolvent2×

Procedure

The title compound is prepared in a similar manner as described for Example 9/reaction step F, from (3S*,4S*)-3-(tert-butyl-dimethyl-silanyloxymethyl)-4-formyl-pyrrolidine-1-carboxylic acid tert-butyl ester (19.3 g, 56.1 mmol), isopropylamine (14.5 mL, 168 mmol) and NaBH(OAc)3 (29.7 g, 140 mmol) in 1,2-dichloroethane (0.5 L) as a yellowish oil. MS: 387.2 [M+H]+. tR (HPLC, C18 column, 5-100% CH3CN/H2O/6 min, 100% CH3CN/2 min, CH3CN and H2O containing 0.1% TFA, flow: 1 mL/min): 5.34 min.

Workup

  1. custom5.34 min.

Sources & evidence

ORD record
ord-3d367221641f4725a02dc59658c7f250
Source dataset
uspto-grants-2010_10
Patent number
US07807709B2

Reaction notes

Loading…