DI-TERT-BUTYLDICHLOROSILANE

DI-TERT-BUTYLDICHLOROSILANE 구조식 이미지
카스 번호:
18395-90-9
상품명:
DI-TERT-BUTYLDICHLOROSILANE
동의어(영문):
DTBSCL2;di-t-Butyldichorosilane;DI-T-BUTYLDICHLOROSILANE;DICHLORODI-TERT-BUTYLSILANE;DI-TERT-BUTYLDICHLOROSILANE;Dichlorobis(tert-butyl)silane;Silane, di-tert-butyldichloro-;Di-tert-butyldichlorosilane>Di-tert-butyldichlorosilane;dichlorobis(1,1-dimethylethyl)silane
CBNumber:
CB5725195
분자식:
C8H18Cl2Si
포뮬러 무게:
213.22
MOL 파일:
18395-90-9.mol
MSDS 파일:
SDS

DI-TERT-BUTYLDICHLOROSILANE 속성

녹는점
−15 °C(lit.)
끓는 점
190 °C729 mm Hg(lit.)
밀도
1.009 g/mL at 25 °C(lit.)
굴절률
n20/D 1.457(lit.)
인화점
143 °F
저장 조건
2-8°C
용해도
가장 일반적인 유기 용매인 Sol입니다.
물리적 상태
액체
Specific Gravity
1.009
색상
무색~연황색
Hydrolytic Sensitivity
8: reacts rapidly with moisture, water, protic solvents
감도
Moisture Sensitive
BRN
1739236
CAS 데이터베이스
18395-90-9(CAS DataBase Reference)
EPA
Silane, dichlorobis(1,1-dimethylethyl)- (18395-90-9)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 C
위험 카페고리 넘버 34-37
안전지침서 26-36/37/39-45
유엔번호(UN No.) UN 2987 8/PG 2
WGK 독일 3
F 고인화성물질 10-21
TSCA No
위험 등급 8
포장분류 II
HS 번호 29319090
그림문자(GHS): GHS hazard pictograms
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 GHS hazard pictograms P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
예방조치문구:
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P363 다시 사용전 오염된 의류는 세척하시오.
P405 밀봉하여 저장하시오.
NFPA 704
2
3 0

DI-TERT-BUTYLDICHLOROSILANE C화학적 특성, 용도, 생산

물리적 성질

mp ?15°C; bp 190°C/729 mmHg; d 1.009 g cm?3.

용도

The presence of the bulky t-butyl groups in di-t-butyldichlorosilane has been found to increase the Si–C bond lengths slightly and to widen the CSiC bond angles by 11.1? relative to dichlorodimethylsilane as determined by electron diffraction and molecular mechanics calculations.
The di-t-butylsilylene protecting group for diols was introduced by Trost and Caldwell and used in a total synthesis of deoxypillaromycinone.It is introduced by the reaction of di-tbutyldichlorosilane with a 1,2- or 1,3-diol in acetonitrile in the presence of triethylamine and 1-hydroxybenzotriazole (HOBt) at 45–90°C (eq 1). For a related, highly reactive reagent see di-t-butylsilyl Bis(trifluoromethanesulfonate).di-t-butylsilyl Bis(trifluoromethanesulfonate)

제조 방법

can be conveniently prepared by chlorination of di-t-butylsilane (CCl4/PdCl2 (cat), 85%)but various other methods of preparation have been reported.

Purification Methods

Purify it by fractional distillation. 20 1.01. It is a colourless liquid with a pleasant odour and does not fume in moist air, but does not titrate quantitatively with excess of dilute alkali. [Tyler et al. J Am Chem Soc 70 2877 1948.] Di -tert-butyl silyl bis(trifluoromethanesulfonate) [85272 -31 -7] M 440.5, b 73.5 -7 4 . 5o/0.35mm, d 4 Purify it by fractional distillation at high vacuum. 20 1.36 (see pK for triflic acid). It is a pale yellow liquid which should be stored under argon. It is less reactive than the diisopropyl analogue. The presence of the intermediate monochloro compound can be detected by 1H NMR, (CHCl3): tert-Bu2Si(OTf)2 [ 1.25s], but impurities have 1.12s for tert-Bu2Si(H)OTf and 1.19s for tert-Bu2HSi(Cl)OTf. [Deslongchamps Tetrahedron Lett 23 4871 1982, Deslongchamps Aldrichimica Acta 17 72 1984.] TOXIC.

DI-TERT-BUTYLDICHLOROSILANE 준비 용품 및 원자재

원자재

준비 용품


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