DIBENZYL CARBONATE
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DIBENZYL CARBONATE 속성
- 녹는점
- 29-33 °C(lit.)
- 끓는 점
- 180-190 °C2 mm Hg(lit.)
- 밀도
- 1.1515 (rough estimate)
- 굴절률
- 1.5485
- 인화점
- >230 °F
- 용해도
- 난용성(0.099g/L)(25°C).
- 물리적 상태
- powder to lump
- 색상
- 흰색에서 거의 흰색
- 감도
- Air Sensitive
- BRN
- 1882864
- CAS 데이터베이스
- 3459-92-5(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
DIBENZYL CARBONATE C화학적 특성, 용도, 생산
화학적 성질
Colorless low melting solid용도
Ionic liquids can effectively accelerate slow N-benzylation reactions utilizing dibenzyl carbonate as an alkylating reagent. Dibenzyl carbonate (DBzlC) has been used to benzylate phenylacetonitrile, benzyl phenylacetate and phenol. Selective N, N-dibenzylation of primary aliphatic amines was carried with dibenzyl carbonate in the presence of phosphonium salts.제조 방법
To a stirred solution of benzyl alcohol (0.216 g, 2.00 mol), tributylphosphine (0.303 g, 1.50 mmol), and CyTMG (0.394 g, 2.00 mmol) in DMF (2.00 mL), CO2 was added at room temperature. After 15 min, tetrabromomethane (0.663 g, 2.00 mmol) was added, the reaction vessel was sealed, and the contents were stirred for 2 h. Thereafter, the reaction mixture was diluted with ethyl acetate, washed successively with 0.5 m aqueous HCl and saturated aq. NaHCO3 solution, and dried over Na2SO4. Diphenylmetha- nol was added to the organic solution as an internal standard and the yield of dibenzyl carbonate was determined from the relative integrals of a methylene peak of the carbonate and a methine peak of diphenylmethanol in the 1H NMR spectrum of the ethyl acetate solution. Dibenzyl carbonate, prepared by a larger scale reaction of CO2 with benzyl alcohol (1.08 g, 10.0 mmol), was isolated by column chromatography (cyclohexane/ethyl acetate, 50:1) in 67.3% yield (0.816 g).일반 설명
Dibenzyl carbonate (DBC) is commonly used as a benzylating agent. Dimethyl carbonate and excess of benzyl alcohol undergoes transesterification in the presence of CsF/α-Al2O3 (cesium fluoride/aluminum oxide) to form DBC. The formation of N,N-dibenzyl derivatives by the reaction of primary aliphatic amines with DBC in the presence of phosphonium salts has been investigated.DIBENZYL CARBONATE 준비 용품 및 원자재
원자재
준비 용품
DIBENZYL CARBONATE 공급 업체
글로벌( 138)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hebei Yanxi Chemical Co., Ltd. | +86-17531190177; +8617531190177 |
peter@yan-xi.com | China | 6011 | 58 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
factory@coreychem.com | China | 29826 | 58 |
Aston Chemical | 13000000000 |
sales@astonchem.com | United States | 1634 | 58 |
Dayang Chem (Hangzhou) Co.,Ltd. | 571-88938639 +8617705817739 |
info@dycnchem.com | China | 52861 | 58 |
Labnetwork lnc. | +86-27-50766799 +8618062016861 |
contact@labnetwork.com | China | 19994 | 58 |
Alfa Chemistry | +1-5166625404 |
Info@alfa-chemistry.com | United States | 21317 | 58 |
Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 |
1026@dideu.com | China | 9003 | 58 |
Hangzhou MolCore BioPharmatech Co.,Ltd. | +86-057181025280; +8617767106207 |
sales@molcore.com | China | 49739 | 58 |
Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503259 +86-19930503259 |
cherry@crovellbio.com | China | 18438 | 58 |
PT CHEM GROUP LIMITED | +86-85511178 +86-85511178 |
peter68@ptchemgroup.com | China | 35451 | 58 |
DIBENZYL CARBONATE 관련 검색:
벤질 클로로탄소산 메틸 에틸 카보네이트 디에틸 카보네이트
Carbonic acid dihexyl ester
Diisopropyl carbonate
Calcium carbonate
SODIUM CARBONATE, MONOHYDRATE
Strontium carbonate
Guanidine carbonate
HOLMIUM CARBONATE
LANTHANUM CARBONATE
Potassium phthalimide
Vinylene carbonate
Propylene carbonate
DIBUTYL CARBONATE
Chloromethyl pivalate
Titanium ethoxide
Ethylene carbonate