Lithium borohydride → (2-{[(4-Cyano-2-hydroxymethyl-benzyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-methyl}-pyridin-3-yl)-carbamic acid tert-butyl ester

HRID 251238Notes

Reaction equation

HRID 251238 reaction equation
C[O:2][C:3](=O)[C:4]1[CH:9]=[C:8]([C:10]#[N:11])[CH:7]=[CH:6][C:5]=1[CH2:12][N:13]([CH2:22][C:23]1[C:28]([NH:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[CH:27][CH:26]=[CH:25][N:24]=1)[CH2:14][C:15]1[C:20]([CH3:21])=[CH:19][CH:18]=[CH:17][N:16]=1.[Li+].[BH4-]>CO>[C:33]([O:32][C:30](=[O:31])[NH:29][C:28]1[C:23]([CH2:22][N:13]([CH2:12][C:5]2[CH:6]=[CH:7][C:8]([C:10]#[N:11])=[CH:9][C:4]=2[CH2:3][OH:2])[CH2:14][C:15]2[C:20]([CH3:21])=[CH:19][CH:18]=[CH:17][N:16]=2)=[N:24][CH:25]=[CH:26][CH:27]=1)([CH3:36])([CH3:34])[CH3:35]

Participants

4

Reactant 2

HCID 4148881Lithium borohydrideHCID 672728132-{[(3-tert-Butoxycarbonylamino-pyridin-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-methyl}-5-cyano-benzoic acid methyl ester

Product 1

HCID 67272411(2-{[(4-Cyano-2-hydroxymethyl-benzyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-methyl}-pyridin-3-yl)-carbamic acid tert-butyl esterYield 98.7%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a cold (0° C.) solution of 2-{[(3-tert-Butoxycarbonylamino-pyridin-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-methyl}-5-cyano-benzoic acid methyl ester (0.388 g, 0.77 mmol) in MeOH (7 mL) was added LiBH4 (107 mg, 4.91 mmol) and the mixture was allowed to warm to room temperature overnight. The mixture was concentrated and the residue was partitioned between CH2Cl2 (50 mL) and 1.0 N NaOH (15 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×15 mL). The combined organic extracts were dried (Na2SO4) and concentrated and provided 0.36 g of (2-{[(4-Cyano-2-hydroxymethyl-benzyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-methyl}-pyridin-3-yl)-carbamic acid tert-butyl ester as a white solid, which was used without further purification.

Workup

  1. concentrationThe mixture was concentrated
  2. customthe residue was partitioned between CH2Cl2 (50 mL) and 1.0 N NaOH (15 mL)
  3. customThe phases were separated
  4. extractionthe aqueous phase was extracted with CH2Cl2 (3×15 mL)
  5. dry with materialThe combined organic extracts were dried (Na2SO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-fb5c836ebca24037adff3ae153162e73
Source dataset
uspto-grants-2011_01
Patent number
US07863293B2

Reaction notes

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