Benzyl chloroformate → HCID 86599137, compound

HRID 2116043Notes

Reaction equation

HRID 2116043 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[C:9]1[C:17]2[O:16][CH:15]([CH2:18][NH2:19])[CH2:14][C:13]=2[CH:12]=[CH:11][CH:10]=1.C(N(C(C)C)CC)(C)C.Cl[C:30]([O:32][CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[O:31]>>[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[C:9]1[C:17]2[O:16][CH:15]([CH2:18][NH:19][C:30](=[O:31])[O:32][CH2:33][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)[CH2:14][C:13]=2[CH:12]=[CH:11][CH:10]=1

Participants

4

Reactant 3

HCID 10387Benzyl chloroformateHCID 81531DiisopropylethylamineHCID 11960767HCID 11960767, compound

Product 1

HCID 86599137HCID 86599137, compoundYield 87.2%

Procedure

Treatment of (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.947 g, 3.73 mmol) with diisopropylethylamine (0.725 g, 5.60 mmol) followed by benzyl chloroformate (0.765 g, 4.48 mmol) generally according to the procedure described for Intermediate 12 provided 1,26 g (87%) of (±)-benzyl {[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Anal. calcd. for C25H25NO3: C, 77.49; H, 6.5; N, 3.61. Found: C, 77.42; H, 6.57; N, 3.62. Chiral HPLC separation of (±)-benzyl {[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel OJ, methanol:carbon dioxide 4:6) provided two fractions. Fraction 1 (Rt=3.12 min, Chiralcel OJ, methanol:carbon dioxide 4:6); Fraction 2 (Rt=4.28 min, Chiralcel OJ methanol:carbon dioxide 4:6).

Sources & evidence

ORD record
ord-54cf83f135e24628b82f8ab7fe81df33
Source dataset
uspto-grants-2008_10
Patent number
US07435837B2

Reaction notes

Loading…