1,1-DIBROMO-2,2-BIS(CHLOROMETHYL)CYCLOPROPANE

한글명:1,1-DIBROMO-2,2-BIS(CHLOROMETHYL)CYCLOPROPANE

카스 번호98577-44-7

상품명:1,1-DIBROMO-2,2-BIS(CHLOROMETHYL)CYCLOPROPANE

CBNumberCB1717239

분자식C5H6Br2Cl2

포뮬러 무게296.82

MOL 파일98577-44-7.mol

화학적 성질

녹는점	48-50 °C (lit.)
끓는 점	277.1±10.0 °C(Predicted)
밀도	2.065±0.06 g/cm3 (20 ºC 760 Torr)
저장 조건	Inert atmosphere,Room Temperature
물리적 상태	powder to crystal
색상	White to Orange to Green
InChI	InChI=1S/C5H6Br2Cl2/c6-5(7)1-4(5,2-8)3-9/h1-3H2
InChIKey	RCRVZCIUKQNOIS-UHFFFAOYSA-N
SMILES	C1(Br)(Br)CC1(CCl)CCl

위험 및 안전 성명

위험품 표기

위험 카페고리 넘버

36/37/38

안전지침서

26-36

WGK 독일

HS 번호

2902190000

NFPA 704:

	0
2		0

그림문자(GHS)

1,1-DIBROMO-2,2-BIS(CHLOROMETHYL)CYCLOPROPANE 화학적 특성, 용도, 생산

용도
1,1-Dibromo-2,2-bis(chloromethyl)cyclopropane may be used as a starting material in the synthesis of [1.1.1]-propellane and ((3-ethynylbicyclo[1.1.1]pentan-1-yl)ethynyl)trimethylsilane.
제조 방법
1000 ml 1,1-bis(chloromethyl)-2,2-dibromocyclopropane was added to a vigorously stirred mixture within 10-15 min, which contains bromoform (370 ml, 4.24 mol), 3-chloro-2-chloromethyl-1-propane (250 g, 2.0 mol), 10 g benzyltriethylammonium chloride, 8 ml ethanol and 200 ml methylene chloride . The temperature was maintained between 25°-35° C. After overnight stirring, 500 ml methylene chloride was added and the thick black mixture was allowed to separate into layers. The top aqueous layer was removed and the bottom layer was gently washed with water (500 ml). 500 ml water was then added and well shaken. Separated the organic phase, treated the residual emulsion with solid sodium chloride and filtered through Celite. All aqueous layers were washed with methylene chloride. The organic extracts were combined, dried over magnesium sulfate, and filtered through Celite. Concentration and vacuum distillation gave the mixture of starting material and black-brown residue which was distilled on a Kugel-Rohr giving semicrystalline fraction containing the product. Crystallization from 400 ml of pentane from a dry ice-acetone bath gave the white wet crystals. The crude product was dissolved in 400 ml of penfane, then 7.5 g silica gel was added. Filtered and low temperature recrystallized again. Finally, obtain the product (1,1-DIBROMO-2,2-BIS(CHLOROMETHYL)CYCLOPROPANE )
일반 설명
1,1-Dibromo-2,2-bis(chloromethyl)cyclopropane is a halogenated cyclopropane derivative. It has been reported to be synthesized from 3-chloro-2-(chloromethyl)-1-propene. It is formed as an intermediate during the synthesis of [1.1.1]propellane by Szeimies method.

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