Carbamic acid, ethyl ester → Ethyl N-tert-butylcarbamate

HRID 1632603ノート

反応式

HRID 1632603 の反応式
[C:1](=[O:6])([O:3][CH2:4][CH3:5])[NH2:2].[CH2:7]=[C:8]([CH3:10])[CH3:9]>>[C:8]([NH:2][C:1](=[O:6])[O:3][CH2:4][CH3:5])([CH3:10])([CH3:9])[CH3:7]

参加物

3

反応物 2

HCID 5641Carbamic acid, ethyl esterHCID 8255Isobutylene

生成物 1

HCID 4189386Ethyl N-tert-butylcarbamate収率 92.4%

反応条件

温度
70 °C

実験手順

A stirred mixture of 89 g of ethyl carbamate, 10 g of ®LEWASORB AC-10 and 70 g of isobutene was heated to 70° C. in a stirred autoclave, and stirring was continued at this temperature for 4 hours. After the reaction was complete, the catalyst was separated off and the reaction mixture was analyzed by gas chromatography. It still contained 4.5 percent by weight of diisobutene, in addition to the end product. Distillation of the crude product gave 134 g (92% of theory) of ethyl N-tert.-butylcarbamate of boiling point 70°-71° C./20 mbar.

後処理

  1. customthe catalyst was separated off
  2. additionIt still contained 4.5 percent by weight of diisobutene, in addition to the end product
  3. distillationDistillation of the crude product

出典と根拠

ORDレコード
ord-996eea09712e470aa2e9599ac077ac39
出典データセット
uspto-grants-1984_10
特許番号
US04476316

反応ノート

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