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1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE

1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE ??? ???
?? ??:
54125-02-9
???:
1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE
???(??):
DK814;DKSI071;DANISHEFSKY'S DIENE;Danishefsky-Kitahara diene.;1-METHOXY-3-(TRIMETHYLSILOXY)BUTADIENE;TRANS-1-METHOXY-3-TRIMETHYLSILOXY- &;1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE;1-METHOXY-3-TRIMETHYLSILYLOXY-1,3-BUTADIENE;1-Methoxy-3-trimethylsiloxy-1,3-butadiene ,95%;1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE, 98+%
CBNumber:
CB2162111
???:
C8H16O2Si
??? ??:
172.3
MOL ??:
54125-02-9.mol
MSDS ??:
SDS

1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE ??

?? ?
68-69 °C/14 mmHg (lit.)
??
0.885 g/mL at 25 °C (lit.)
???
n20/D 1.454(lit.)
???
113 °F
?? ??
2-8°C
??? ??
liquid
Specific Gravity
0.89
??
Colorless to light yellow Liquid
???
???? ????? ?? ? ????. ?? ??? ????.
Hydrolytic Sensitivity
8: reacts rapidly with moisture, water, protic solvents
??
Moisture Sensitive
Merck
14,6001
BRN
1616761
InChI
1S/C8H16O2Si/c1-8(6-7-9-2)10-11(3,4)5/h6-7H,1H2,2-5H3/b7-6+
InChIKey
SHALBPKEGDBVKK-VOTSOKGWSA-N
SMILES
CO\C=C\C(=C)O[Si](C)(C)C
CAS ??????
54125-02-9(CAS DataBase Reference)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
?? ???? ?? 10
????? 23-24/25
????(UN No.) UN 1993 3/PG 3
WGK ?? 3
F ?????? 10-21
TSCA No
?? ?? 3
???? III
HS ?? 2931900090
???? ??? 3 - Flammable liquids
Hazard Classifications Flam. Liq. 3
????(GHS): Flame (GHS02)
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H226 ??? ?? ? ?? ??? ?? ?? 3 ??
??????:
P210 ?·???·??·????? ????? - ?? ???.
P233 ??? ??? ?????. ??? ??? ? ?? ?? ??? ???? ?????.
P240 ??? ????? ?? ? ??????.
P241 ?? ??? ??[???/??/??/...]?(?) ?????.
P242 ???? ???? ?? ??? ?????
P243 ??? ?? ??? ????.
NFPA 704
2
1 0

1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE C??? ??, ??, ??

??

1-Methoxy-3-trimethylsiloxy-1,3-butadiene is employed as a reagent in Mannich-Michael reaction for the synthesis of piperidinones and enaminones. As Diels-Alder diene, it is used in the synthesis of pyridones and pyranones, sulfone analogues of griseofulvin (sulfogriseofulvins) and 4H-1-aminopyrroles and 4, 5H-pyrazoles.

?? ??

trans-1-methoxy-3-trimethylsiloxy-1,3-butadiene is a funtionalized Diels-Alder diene. Mukaiyama-Michael-type addition/heterocyclization of trans-1-methoxy-3-trimethylsiloxy-1,3-butadiene (Danishefsky′s diene) with 1,2-diaza-1,3-butadiene has been investigated. Asymmetric hetero-Diels-Alder cyclization of Danishefsky′s diene with benzaldehyde catalyzed by mesoporous inorganic/metalorganic hybrid materials has been reported.

Purification Methods

It may contain up to 1% of the precursor 4-methoxybut-4-ene-2-one. It is easily purified by distilling through a Vigreux column (p 11) in a vacuum and taking the middle fraction. [Danishefsky & Kitihara J Am Chem Soc 96 7807 1974, Danishefsky Acc Chem Res 14 400 1981.]

1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE ?? ?? ? ???

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1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE ?? ??

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