Detail of "2904-57-6"

Reference

1,3-Dipolar cycloaddition of mesitonitrile oxide to cis- and trans-cyclooctene

1,3-Dipolar cycloaddition of mesitonitrile oxide to cis- and trans-cyclooctene. A kinetic investigation. Bianchi, Giorgio; Maggi, Domenico (Ist. Chim. Org., Univ. Pavia, Pavia, Italy).Some commonly used reagents like 2904-57-6 and 931-87-3 are used in this experiment. J. Chem. Soc., Perkin Trans. 2, (9), 1030-2 (English) 1976. CODEN: JCPKBH. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Rate consts. and activation parameters for the addn. of mesitonitrile oxide to cis- and trans-cyclooctene, giving I (R = .alpha.-H) and I (R = .beta.-H) resp., are detd. From the results, it is concluded that the high reactivity of trans-cyclooctene with mesitonitrile oxide and other 1,3-dipoles is due to distortion of the double bond. .

.DELTA

.DELTA.2-Isoxazoline derivatives. Part X. 1,3-Dipolar cycloadditions of nitrones and nitrile oxides with indene, 1,2-dihydrodnaphthalene, and trans-1-phenylpropene. Bianchi,Giorgio; De Micheli, Carlo; Gandolfi, Remo (Ist. Chim. Org., Univ. Pavia, Pavia, Italy). J. Chem. Soc., Perkin Trans. 1, (14), 1518-23 (English) 1976. CODEN: JCPRB4. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Reaction of cyclic and acyclic nitrones and nitrile oxides with 1,2-dihydronaphthalene, indene, and trans-MeCH:CHPh gave mixts. of regioisomers. E.g., PhC.tplbond. 2904-57-6 and 61191-52-4 which are cas registry numbers of substances are two of reagents here.NO with trans-MeCH:CHPh gave 43.5% of a mixt. of isoxazolines I (R = Me, R1 = Ph; R = Ph, R1 = Me) and with indene 91% of a mixt. of II and III was formed. The results are analyzed on the basis of frontier orbital interactions and steric requirements of the reagents; transition state structures for the reactions are proposed. .