Detail of "3330-25-4"

CAS Number:
3330-25-4
Name:
2-Butenal,4-chloro-2-methyl-
Molecular Structure:
Formula:
C₅H₇ClO
Molecular Weight:
118.56
Synonyms:
Crotonaldehyde,4-chloro-2-methyl- (7CI,8CI);2-Methyl-4-chloro-2-butenal;4-Chloro-2-methyl-2-butenal;4-Chloro-2-methylcrotonaldehyde;Crotonaldehyde, 4-chloro-2-methyl-;
Density:
1.047 g/cm³
Boiling Point:
194.6 °C at 760 mmHg
Flash Point:
73.5 °C

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4-Chloro-2-methylcrotonaldehyde: 4-Chloro-2-methylcrotonaldehyde. Re, Luciano; Eletti Bianchi, Giancarlo; Centini, Felice (Anic S.p.A., Italy). Ger. Offen. DE 2620968 18 Nov 1976, 11 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07C047-24. PRIORITY: IT 75-23199 12 May 1975. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) Section cross-reference(s): 16, 27 Liq.-phase chlorination of the epoxide I by CuCl2 in the presence of LiCl gave .ltoreq.80% ClCH2CH:CMeCHO (II); gas-phase chlorination of I by Me3COCl over Al2O3 gave .ltoreq.37% II.In this experiment, several chemicals are used like 3330-25-4 and 497-03-0 The by-product from either method was MeCH:CMeCHO. II is useful as an intermediate to vitamin A acetate. .

Halogen-containing acyloxymethylbutene: Halogen-containing acyloxymethylbutene. Fischer, Rolf; Weitz, Hans Martin; Schmieder, Klaus; Paust, Joachim (BASF A.Several substances are used for example 3330-25-4 which is its cas registry number.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3331399 A1 7 Mar 1985, 10 pp. (German). (Germany). CODEN: GWXXBX. CLASS: ICM: C07C069-635. APPLICATION: DE 83-3331399 31 Aug 1983. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) MeCRR1CH:CHX (X = Br, Cl; R = CHO, R1 = R2CO2 or RR1 = R2CO2CH; R2 = H, C1-16 alkyl) were prepd. Thus ClCH2CH:CMeCHO was treated with AcOH-AcOK in Ac2O to give AcOCH:CHCMe:CHOAc and ClCH:CHCMe:CHOAc, which were oxidized with AcOOH to (AcO)2CHCH:CMeCHO and ClCH:CHCMe(OAc)CHO (I).In this experiment, several chemicals are used like 3330-25-4 Reaction of 1,2-epoxybutane, EtO2CCMe:CHCH2PPh3Cl, and I gave 74.4% of 55/45% all-E/2Z,4Z,7E-ClCH:CHCMe(OAc)CH:CHCH:CMeCO2Et. ..