4'-Bromo-3'-methylacetophenone

4'-Bromo-3'-methylacetophenone 구조식 이미지
카스 번호:
37074-40-1
상품명:
4'-Bromo-3'-methylacetophenone
동의어(영문):
NSC 405623;Fluralaner-003;Fluralaner Impurity 29;3-Methyl-4-bromoacetophenone;4'-Bromo-3'-methylacetophenone;4'-BROMO-3'-METHYLACETOPHENONE;Ethanone, 1-(4-broMo-3-Methylphenyl)-
CBNumber:
CB7947102
분자식:
C9H9BrO
포뮬러 무게:
213.07
MOL 파일:
37074-40-1.mol

4'-Bromo-3'-methylacetophenone 속성

녹는점
31-32 °C
끓는 점
157-159 °C(Press: 19 Torr)
밀도
1.388±0.06 g/cm3(Predicted)
저장 조건
Sealed in dry,Room Temperature
용해도
클로로포름(약간 용해됨), 메탄올(약간 용해됨)
물리적 상태
융합된 고체
색상
Pale lemon
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
HS 번호 2914390090
그림문자(GHS): GHS hazard pictograms
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 GHS hazard pictograms P264, P270, P301+P312, P330, P501
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고 GHS hazard pictograms
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P271 옥외 또는 환기가 잘 되는 곳에서만 취급하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.

4'-Bromo-3'-methylacetophenone C화학적 특성, 용도, 생산

용도

4'-Bromo-3'-methylacetophenone is a versatile building block that is used in the synthesis of many complex compounds. It can be used as a reactant, reagent, or speciality chemical.

Synthesis

A solution of 4-bromo-3-methylbenzaldehyde (4 g, 20 mmol) in dry tetrahydrofuran (40 mL) was cooled to 0??C under nitrogen atmosphere, and then methyl magnesium bromide (20 mL, 1N in tetrahydrofuran) was added dropwise. The ice bath was removed, and the mixture was stirred for 2 hours. Ammonium chloride aqueous (40 mL) was added and the mixture was extracted with dichloromethane (20 mL * 3). The organic phase was dried by sodium sulphate, filtered and concentrated to give a residue. The residue was purified by column chromatography (silica gel, petroleum ether/ethyl acetate = 5:1) to give 1-(4-bromo-3-methylphenyl)ethanol. Colorless oil, yield 4.0 g, 93%. Pyridinium chlorochromate (48 g, 223 mmol) was added to a solution of 1-(4-bromo-3-methylphenyl)ethanol (31.9 g, 148 mmol) in dichloromethane (800 mL). The mixture was stirred at room temperature for 2 hours. The mixture was concentrated to give a residue. The residue was purified by column chromatography (silica gel, petroleum ether/ethyl acetate = 25:1) to give 4'-Bromo-3'-methylacetophenone. Yield 27.3 g, 87%.
Synthesis_37074-40-1 Figure Synthesis of 4'-Bromo-3'-methylacetophenone

4'-Bromo-3'-methylacetophenone 준비 용품 및 원자재

원자재

준비 용품


4'-Bromo-3'-methylacetophenone 공급 업체

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