Acetone Cyanohydrin → HCID 54721668, compound

HRID 357874Notes

Reaction equation

HRID 357874 reaction equation
[OH:1][C:2]1[CH2:7][C:6]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[O:5][C:4](=[O:20])[CH:3]=1.CCN(CC)CC.[C:28](Cl)(=O)[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1.CC(C)(O)C#N.C([BH3-])#N.[Na+]>C(O)(=O)C.C(#N)C.C(Cl)Cl>[OH:1][C:2]1[CH2:7][C:6]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[O:5][C:4](=[O:20])[C:3]=1[CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1

Participants

9

Reactant 5

HCID 6406Acetone CyanohydrinHCID 7412Benzoyl chlorideHCID 8471Triethylamine2×HCID 5003444Sodium cyanoborohydrideHCID 546804105,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-one

Product 1

HCID 54721668HCID 54721668, compound

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolvent

Procedure

The title compound was prepared as described in General Method 8 using the following: 5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-one (0.250 g, 0.940 mmol), Et3N (0.13 mL, 0.94 mmol), benzoyl chloride (0.109 mL, 0.94 mmol), CH2Cl2 (2.0 mL), acetonitrile (5.0 mL), acetone cyanohydrin (0.01 mL, 0.09 mmol), Et3N (0.27 mL, 1.9 mmol), glacial acetic acid (10.0 mL), sodium cyanoborohydride (0.133 g, 2.11 mmol). Purification was achieved by submitting the final residue to column chromatograpy (SiO2, 4/1 hexane/ethyl acetate to 3/2 hexane /ethyl acetate) to provide a solid (0.105 g, 63°-65° C.). 1H NMR (400 MHz, DMSO-d6) δ 11.136 (s, 1 H), 7.501-7.280 (m, 11 H), 6.997-6.932 (m, 2 H), 6.566 (d, 2 H, J=7 Hz), 3.530 (s, 2 H), 3.432 (s, 2 H).

Workup

  1. customPurification
  2. customto provide a solid (0.105 g, 63°-65° C.)

Sources & evidence

ORD record
ord-802c4e36505641bcb98fb3e51dde4754
Source dataset
uspto-grants-1998_11
Patent number
US05840751

Reaction notes

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