تفاعل #491455

معادلة التفاعل

methyl iodide

Sodium hydride

1-(3,6-dibromo-9H-carbazol-9-yl)-3-(3-methoxyphenylamino)propan-2-ol

→

N-(3-(3,6-dibromo-9H-carbazol-9-yl)-2-methoxypropyl)-3-methoxyaniline

المذيبات

DMF

DMF

ethyl acetate

ظروف التفاعل

المعالجة

1. 1
   أخرىlc/ms for the consumption of SM
2. 2
   أخرىabout 5% N-methyl product had formed
3. 3
   درجة الحرارةan increase of N-Me to O-Me
4. 4
   غسيلwashed several times with water and finally brine
5. 5
   تجفيفThe organic layer was dried over Na2SO4
6. 6
   ترشيحfiltered
7. 7
   أخرىcondensed
8. 8
   أخرىThe mixture was purified by preparative TLC 30% EtOAc/hexanes

الإجراء التجريبي

Sodium hydride (9.0 mg, 0.23 mmol) was added to a stirring solution of 1-(3,6-dibromo-9H-carbazol-9-yl)-3-(3-methoxyphenylamino)propan-2-ol (99.3 mg, 0.20 mmol) in DMF 0.5 ml, 0.39 M). The solution was stirred at room temperature for about 70 minutes before the dropwise addition of a solution of methyl iodide (14 ml. 0.22 mol) in DMF (1.0 ml). The reaction was monitored by lc/ms for the consumption of SM and the appearance of O and N-methyl products. After 2.5 hours of stirring at r.t, conversion was about 30% and about 5% N-methyl product had formed. The reaction was stopped when an increase of N-Me to O-Me had been observed and conversion was about 50%. The brown solution was diluted with ethyl acetate and washed several times with water and finally brine. The organic layer was dried over Na2SO4, filtered and condensed. The mixture was purified by preparative TLC 30% EtOAc/hexanes.

المصدر