Regio-controlled Prenylation and Geranylation of 3-Furylmethylmagnesium Bromide. Selective Syntheses of 3-Substituted Furanoid and 2-Substituted 3-Methylfuranoid Terpenes
作者:Shuki Araki、Yasuo Butsugan
DOI:10.1246/bcsj.56.1446
日期:1983.5
main products. When the reactions were carried out in the presence of a catalytic amount of copper(I) iodide, normal coupling occurred and 3-substituted furans, perillene and dendrolasin, were formed in good yields. The related naturally occurring 3-substitutedthiophene, 3-(4-methyl-3-pentenyl)thiophene, was also synthesized from 3-thienylmethylmagnesium bromide and prenyl diethy phosphate.
A new strategy for C−C bond cleavage and intramolecular ringexpansionfluorination of unactivated cyclopropanes has been developed. The reaction consists of C−C bond scission and ringexpansionfluorination, which are both promoted by a novel hypervalent fluoroiodane(III) reagent 1.
Studies on C-heterocyclic tin compounds. The synthesis and spectral characterization of some thienyl tetraorganotin(IV) compounds
作者:V.G. Kumar Das、Lo Kong Mun、Stephen J. Blunden
DOI:10.1016/0022-328x(87)80093-1
日期:1987.11
The synthesis of a series of tetraorganotin(IV) compounds containing selectively the 2-thienyl, 3-thienyl, 5-methyl-2-thienyl, 5-t-butyl-2-thienyl, 4-methyl-2-thienyl and 3-(2-pyridyl)-2-thienyl groups [L], of formula R4-nSn[L]n (R = Ph, p-tolyl, Me, cyclopentyl, cyclohexyl; n = 1–4) is reported. Features of structural interest deduced from 119mSnMössbauer and NMR (13C and 119Sn modes) spectra are
一系列选择性含有2-噻吩基,3-噻吩基,5-甲基-2-噻吩基,5-叔丁基-2-噻吩基,4-甲基-2-噻吩基和3-的四有机锡(IV)化合物的合成据报道,式R 4- n Sn [L] n(R = Ph,对甲苯基,Me,环戊基,环己基; n = 1-4)的(2-吡啶基)-2-噻吩基[L] 。考虑了从119m SnMössbauer和NMR(13 C和119 Sn模式)光谱得出的结构感兴趣的特征。
Benzomorphan related compounds. V. Synthesis of thienomorphans
作者:M. Alvarez、J. Bosch、R. Cranados、F. López
DOI:10.1002/jhet.5570150204
日期:1978.3
A series of thieno [2,3-ƒ]-, [3,2-ƒ]- and [3,4-ƒ]morphans prepared both by the Grewe synthesis and by the reaction of 2-cyanopyridines with 3-thienyllithium is described. Furthermore, a new synthetic route to thieno [2,3-ƒ] morphans from 3-ketotetrahydrolhiophene is reported. Separation and assignment of the α- and β-diastereomerie structures by means of nmr data is reported. Some side products were
Benzomorphan analogues: Synthesis of some thieno[2,3-<i>f</i>] morphans
作者:Thomas A. Montzka、John D. Matiskella
DOI:10.1002/jhet.5570110602
日期:1974.12
A series of N-substituted 5,9-dimethylthieno[2,3-f]morphans and 5-phenylthieno[2,3-f] - morphans has been prepared starting from 3,4-dimethylpyridine and 4-phenylpyridine and 3-thenylbromide by an application of the Grewe morphinan synthesis. The thieno [2,3-f]morphans were tested for analgetic activity, but only weak analgetic activity relative to toxicity and no morphine antagonism activity was observed