Methanol → 2-napthylsulfide

HRID 1385528Notes

Reaction equation

HRID 1385528 reaction equation
[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[SH:11].CO>CCO>[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[S:11][C:3]1[CH:2]=[CH:1][C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=1

Participants

4

Reactant 2

HCID 887MethanolHCID 70582-Naphthalenethiol

Product 1

HCID 112199022-napthylsulfide

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Using the (R,R)-(salen)Co(II) precatalyst of 1 (91 mg, 0.15 mmol, 0.005equiv), (+/−)-(tert-butyldimethylsilyl) glycidyl ether (5.64 g, 30.0 mmol), AcOH (32 mL, 0.6 mmol, 0.02 equiv), 0.3 mL THF, and H2O (297 mL, 16.5 mmol, 0.55 equiv) and a procedure analogous to the one outlined for 5b, (S)-(tert-butyldimethylsilyl) glycidyl ether 5c (2.72 g, 14.5 mmol, 48%) was obtained as a clear oil by vacuum distillation of the reaction mixture (30° C., 0.5 Torr). The product was determined to be present in >99% ee by derivatization through ring opening with 2-napthalenethiol in methanol using 1 equiv TEA at 0° C. and direct analysis of the 2-napthylsulfide thus obtained (Chiralcel OD, 99.25:0.75 hexanes:EtOH, 1 mL/min, 230 nm).

Sources & evidence

ORD record
ord-686d075f5daa4d2bb5d1adeec265ac77
Source dataset
uspto-grants-2001_07
Patent number
US06262278B1

Reaction notes

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