5,5-Diethoxy-3-methyl-2-pentenal → 6-Bromo-3-methyl-1,1-diethoxy-3,5-hexadiene

반응식

[Br:1][CH:2]=CC=C(C)CC(OC)OC.[CH2:13]([O:15][CH:16]([O:23][CH2:24][CH3:25])[CH2:17][C:18]([CH3:22])=[CH:19][CH:20]=O)[CH3:14]>>[Br:1][CH:2]=[CH:20][CH:19]=[C:18]([CH3:22])[CH2:17][CH:16]([O:23][CH2:24][CH3:25])[O:15][CH2:13][CH3:14]

참가 물질

반응물 2

HCID 537671965,5-Diethoxy-3-methyl-2-pentenal

HCID 540053591-Bromo-6,6-dimethoxy-4-methylhexa-1,3-diene

생성물 1

HCID 540851106-Bromo-3-methyl-1,1-diethoxy-3,5-hexadiene

실험 절차

6-Bromo-3-methyl-1,1-diethoxy-3,5-hexadiene is prepared under the conditions described earlier for the preparation of 6-bromo-3-methyl-1,1-dimethoxy-3,5-hexadiene. Starting with 5,5-diethoxy-3-methyl-2-pentenal (4.67 g; 25.1 mmol), 6-bromo-3-methyl-1,1-diethoxy-3,5-hexadiene (5.1 g) is obtained in 77.5% yield. The structure of the product obtained is confirmed by the infrared spectrum and the proton nuclear magnetic resonance spectrum.

후처리

custom6-Bromo-3-methyl-1,1-diethoxy-3,5-hexadiene is prepared under the conditions

출처 및 근거

ORD 기록: ord-79562b94f7d747c799d534b9c1b0283f
출처 데이터셋: uspto-grants-1988_11
DOI: 10.6084/m9.figshare.5104873.v1
특허 번호: US04788344

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