Реакция #1857

Уравнение реакции

XVI

6-Methylnomicotine

formaldehyde

sodium hydroxide

→

XVII

Выход 92.0%

(+/-)-6-Methylnicotine

Выход 92.0%

Растворители

formic acid

Условия реакции

Обработка

1. 1
   ДругоеInto a round bottom flask was placed
2. 2
   ТемператураThe mixture then was refluxed under nitrogen for 8 hr
3. 3
   ДругоеThe cooled reaction mixture
4. 4
   Экстракцияthe solution extracted with chloroform (5×25 mL)
5. 5
   СушкаThe combined organic liquors were dried over anhydrous sodium sulfate
6. 6
   Фильтрацияfiltered
7. 7
   Другоеevaporated
8. 8
   workup.DISTILLATIONand the resulting oil distilled under reduced pressure

Методика

Into a round bottom flask was placed XVI (2.0 g), and formaldehyde (37% w/v in water, 20 mL) and formic acid (95-97% w/v, 45 mL), both a 0° C., were added. The mixture then was refluxed under nitrogen for 8 hr. The cooled reaction mixture was basified with aqueous sodium hydroxide (50% w/v) to pH 8-9, and the solution extracted with chloroform (5×25 mL). The combined organic liquors were dried over anhydrous sodium sulfate, filtered and evaporated; and the resulting oil distilled under reduced pressure to afford XVII as a clear odorless oil (b.p. 107° C. at 3 mm Hg, 92% yield).

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