تفاعل #86285

معادلة التفاعل

(5-(mercaptomethyl)-1,3-phenylene)dimethanol

triethylamine

2,2-dimethylthiirane

→

(5-((2-mercapto-2-methylpropylthio)methyl)-1,3-phenylene)dimethanol

المردود 59.2%

المذيبات

methanol

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwas added
2. 2
   أخرىthe resulting mixture was capped
3. 3
   تركيزThe reaction was then concentrated
4. 4
   workup.DISSOLUTIONredissolved in dichloromethane
5. 5
   ترشيحfiltered with neat ethyl acetate
6. 6
   تركيزconcentrated

الإجراء التجريبي

(5-(mercaptomethyl)-1,3-phenylene)dimethanol (0.163 g, 0.885 mmol) was dissolved in methanol (3 mL) in a small vial and a stir bar was added. To this solution was added triethylamine (0.016 mL, 0.118 mmol) followed by 2,2-dimethylthiirane (0.058 mL, 0.590 mmol) and the resulting mixture was capped and stirred overnight (16 hrs) at room temperature. The reaction was then concentrated, redissolved in dichloromethane, loaded onto a silica ptlc plate (1000 micron) and the plate was developed using 10% methanol in dichloromethane. The band corresponding to the product was scraped, filtered with neat ethyl acetate, and concentrated to give (5-((2-mercapto-2-methylpropylthio)methyl)-1,3-phenylene)dimethanol (0.095 g, 0.349 mmol, 59.1% yield). 1H NMR (400 Hz, CDCl3): δ 7.26 (s, 3H), 4.69 (s, 4H), 3.82 (s, 2H), 2.74 (s, 2H), 2.17 (s, 1H), 2.12 (br s, 2H), 1.43 (s, 6H); 13C NMR (400 Hz, CDCl3): δ 141.6, 138.9, 126.7, 124.3, 65.0, 49.0, 45.4, 38.4, 31.5; MS (m/z), expected: 272.4. found 295.0 (M+Na). See FIG. 30.

المصدر