Sodium cyanoborohydride → N-[2-(4-methoxycarbonylmethylphenoxy)-1(R)-methylethyl]-2(S)-t-butyldimethylsilyloxy-2-phenylethanamine

HRID 1901214Notes

Reaction equation

HRID 1901214 reaction equation
[Si:1]([O:8][C@@H:9]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[CH:10]=O)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[NH2:18][C@H:19]([CH3:33])[CH2:20][O:21][C:22]1[CH:27]=[CH:26][C:25]([CH2:28][C:29]([O:31][CH3:32])=[O:30])=[CH:24][CH:23]=1.C([BH3-])#N.[Na+]>CO>[CH3:32][O:31][C:29]([CH2:28][C:25]1[CH:26]=[CH:27][C:22]([O:21][CH2:20][C@H:19]([NH:18][CH2:10][C@@H:9]([O:8][Si:1]([C:4]([CH3:5])([CH3:6])[CH3:7])([CH3:2])[CH3:3])[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH3:33])=[CH:23][CH:24]=1)=[O:30]

Participants

5

Reactant 3

HCID 5003444Sodium cyanoborohydrideHCID 11075902(S)-alpha-(t-Butyldimethylsilyloxy)-alpha-phenylacetaldehydeHCID 22867083Methyl 4-[2(R)-amino-1-propoxy]phenylacetate

Product 1

HCID 22867086N-[2-(4-methoxycarbonylmethylphenoxy)-1(R)-methylethyl]-2(S)-t-butyldimethylsilyloxy-2-phenylethanamine

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Following a procedure similar to that described in Preparation 29, but using 1.5 g of (S)-α-(t-butyldimethylsilyloxy)-α-phenylacetaldehyde (prepared as described in Preparation 26), 1.1 g of methyl 4-[2(R)-amino-1-propoxy]phenylacetate (prepared as described in Preparation 27), 10 ml of absolute methanol and 950 mg of sodium cyanoborohydride, the title compound was obtained.

Workup

  1. customthat described in Preparation 29

Sources & evidence

ORD record
ord-54dfb563003b4e3fb6c137a44877e940
Source dataset
uspto-grants-1996_11
Patent number
US05576340

Reaction notes

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