Реакция #1519097

Уравнение реакции

methanol

sodium hydride

Isatin

→

N-[4-(1,3-dioxolyl)phenyl]isatin

Растворители

chloroform

chloroform

DMF

Условия реакции

Обработка

1. 1
   ТемператураThis suspension was heated in an oil-bath at 135° C. under nitrogen for 16 hours
2. 2
   ТемператураIt was then cooled to room temperature
3. 3
   ФильтрацияThe resulting suspension was filtered
4. 4
   Концентрированиеthe filtrate was concentrated under reduced pressure
5. 5
   Другоеevaporated to dryness
6. 6
   ДругоеA thick, viscous oil was recovered which
7. 7
   Другоеsuch for the next reaction

Методика

Isatin (1.88 g, 0.0128 moles) in anhydrous DMF (100 mL) was cooled in an ice bath under nitrogen and treated with sodium hydride (0.3 g, 1 equivalent). The reaction was warmed to room temperature and stirred for 1 hour. It was then treated with 2-(4-bromophenyl)-1,3-dioxalane (2.83 g, 0.0124 moles) followed by CuI (4.71 g, 2 equivalents). This suspension was heated in an oil-bath at 135° C. under nitrogen for 16 hours. It was then cooled to room temperature and diluted with an equal volume of chloroform. The resulting suspension was filtered and the filtrate was concentrated under reduced pressure. The residue was suspended in xylenes (100 mL) and evaporated to dryness. A thick, viscous oil was recovered which was used as such for the next reaction. TLC (5% methanol in chloroform) showed clean conversion, Rf (product)=0.91.

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