Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Methyl butenoate, trans

C4H10S diethyl sulfide 352-93-2 169,20 11.900 1 4887 C5H802 methyl trans-2-butenoate 623-43-8 231.15 13.110 2... [Pg.558]

Methyl (2E)-2-butenoate Methyl trans-2-butenoate. See Methyl crotonate 2-Methyl-2-butenoic acid (E)-2-Methylbut-2-enoic acid trans-2-Methyl-2-butenoic acid. [Pg.2595]

CAS 623-43-8 EINECS/ELINCS 210-793-7 Synonyms 2-Butenoic acid, methyl ester, (E)- trans-2-Butenoic acid methyl ester Crotonic acid, methyl ester, (E)- (E)-Crotonic acid methyl ester Methyl (2E)-2-butenoate Methyl trans-2-butenoate Methyl o-crotonate Methyl E-crotonate Methyl trans-crotonate trans-Methyl crotonate Empirical C5H8O2 Formula CH3CH=CHC(0)0CH3 Properties Colorless liq. m.w. 100.1 sp.gr. 0.945 b.p. 116-120 C flash pt. (CC) -1 C ref. index 1.425... [Pg.2607]

One of the most useful features of the Diels-Alder reaction is that it is stereospecific, meaning that a single product stereoisomer is formed. Furthermore, the stereochemistry of the dienophile is retained, if we carry out the cycloaddition with methyl cis-2-hutenoate, only the cis-substituted cyclohexene product is formed. With methyl trans-2-butenoate, only the trans-substituted cyclohexene product is formed. [Pg.512]

The reactive intermediates A and C could be so short-lived that they cyclize extremely fast. They certainly could cyclize so fast that the trans-configuration of the 2-methyl-2-butenoic acid moiety by and large is carried over into the cycloadduct. Intermediates A and C would therefore hardly have enough time to isomerize to conformers B and D, respectively, by way of a rotation about the C—C single bond between the two C atoms that used to be connected by a configurationally stable C=C double bond in the starting ester. However, it seems unbelievable that not even as little as 0.003% of either of the potential intermediates would have... [Pg.679]

Fig. 15.41. Orientation-selective and stereoselective 1,3-dipolar cycloaddition of diazomethane. The trans-configured 2-methyl-2-butenoic acid is converted to the trans-configured cycloadduct with a diastereoselectivity of better than 99.997 0.003. Fig. 15.41. Orientation-selective and stereoselective 1,3-dipolar cycloaddition of diazomethane. The trans-configured 2-methyl-2-butenoic acid is converted to the trans-configured cycloadduct with a diastereoselectivity of better than 99.997 0.003.
SYNS 2-BUTENOIC ACID, 2-METHYL-, (E)-(9CI) CEVADIC ACID CROTONIC ACID, 2-METHYL-, (E)- (E)-2,3-DIMETHYLACRYLIC ACID trans-O-P-DIMETH-YLACRYLIC ACID trans-2,3-DIMETHYLACRYLIC ACID ttans-2-METHYL-2-BUTENOIC ACID (E)-2-METHYL-CROTONIC ACID trans-2-METHYLCROTOKIC ACID TIGUNIC ACID... [Pg.1343]

C5H802 trans-2-methyl-2-butenoic acid 80-59-1 76 00 0.9641 1 5320 C5H10Br2O2 1,3-dibromo-2,2-dimethoxypropane 22094-18-4 25.00 1.7533 2... [Pg.217]

C7H1202 ethyl trans 2-methyl-2-butenoate 5837-78-5 429.15 37.121 1,2 11563 C7H1205 dimethyl 3-hydroxyglutarate 7250-55-7 526.48 46.434 2... [Pg.457]

C6H10O2 methyl 3-methyl-2-butenoate 924-50-5 17.864 124.781 1.2 8232 C6H12 3-methyl-trans-2-pentene 616-12-6 15.575 121.445 1,2... [Pg.608]

When the cycloadditions arc conducted with unsaturated esters a similar trend is observed63. The reaction of the TV-benzyl nitrone 5a with ( )-methyl 2-butenoate is poorly selective (d.r. 74 26), but with 5 b the same ester gives a 90 10 mixture of products in favor of the 3,4-trans-4,5-fraHi-cycloadduct63. [Pg.758]

One major feature of palladium(II) catalysts, the most simple one being palladium(II) acetate, is their ability to transform a,/ -unsaturated carbonyl compounds into the corresponding cyclopropanes V The stereospecificity of this process is illustrated by the high yield conversion of methyl ( >2-butenoate to methyl trans-2-methylcydopropanecarboxylate 3. For further examples and a procedure, see Vol. E19b, p289. [Pg.980]

Allyl-2-methoxyphenyl phenylacetate. See Euqenyl phenylacetate Allyl trans-2-methyl-2-butenoate. See Allyl tiqiate... [Pg.165]

See other pages where Methyl butenoate, trans is mentioned: [Pg.618]    [Pg.618]    [Pg.15]    [Pg.119]    [Pg.322]    [Pg.428]    [Pg.699]    [Pg.1650]    [Pg.1596]    [Pg.1581]    [Pg.1802]    [Pg.1827]    [Pg.1801]    [Pg.1675]    [Pg.398]    [Pg.618]    [Pg.548]    [Pg.618]    [Pg.679]    [Pg.509]    [Pg.509]    [Pg.548]    [Pg.44]    [Pg.15]    [Pg.15]    [Pg.33]    [Pg.119]    [Pg.119]    [Pg.136]    [Pg.322]    [Pg.339]    [Pg.427]    [Pg.427]    [Pg.428]    [Pg.608]    [Pg.612]    [Pg.699]    [Pg.699]    [Pg.717]    [Pg.559]    [Pg.1341]    [Pg.216]    [Pg.824]    [Pg.539]    [Pg.1650]    [Pg.1596]    [Pg.722]   
See also in sourсe #XX -- [ Pg.625 ]



SEARCH



Butenoic 3-methyl

© 2024 chempedia.info