Dimethyl Sulfide → HCID 21461371, compound

Participants

Reaction Steps

To a stirred solution of dimethylsulphide (5 μl, 0.07 mmol), rhodium (II) acetate (2 mg, 0.005 mmol) and N-(4-nitrobenzylidene)toluene-p-sulphonamide (102 mg, 0.33 mmol; J. C. S. Perkin I (1981) 2435-2442) in dichloromethane (2 ml) was added phenyldiazomethane (prepared as in Example 36; 8.11 ml of a 0.074M solution in t-butylmethylether) over a period of 12 hours. Upon completion of the addition the solvent was removed in vacuo and the residue was chromatographed using silica gel elating with 15:85 ethyl acetate:petrol to give the title compound as a mixture of trans and cis isomers. Trans isomer (48 mg, 37%) δH (CDCl3) 8.10-8.19(2H,m), 7.53-7.64(4H,m), 6.95-7.41(7H,m), 4.27(1H,d,J=6 Hz), 4.16(1H,d,J=6 Hz), 2.36(3H,s)ppm. Cis isomer (9 mg; 7%) δH (CDCl3) 8.23-8.33(2H,m); 7.15-7.60(11H,m), 4.13(1H,d,J=2 Hz) 3.87(1H,d,J=2 Hz) 1.68(3H,s)ppm.

Provenance & Evidence