Zobrazeno 1 - 10
of 158
pro vyhledávání: '"TOORU FUJIWARA"'
Publikováno v:
Tetrahedron Letters. 43:5755-5758
Thioacetals are selectively transformed into two types of terminal olefins, one with one-carbon homologation and the other with two-carbon homologation, by treatment with a titanocene(II) species under ethylene. The mode of the reaction is controlled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33f82f076fcc95f14ac8dade1c3c0976
https://doi.org/10.1016/s0040-4039(02)01202-9
https://doi.org/10.1016/s0040-4039(02)01202-9
Publikováno v:
Tetrahedron Letters. 42:3369-3372
The Cp2Ti[P(OEt)3]2 1 -promoted intramolecular reaction of gem-dihalides possessing a terminal double bond is described. The treatment of 6,6- and 7,7-dihalo-1-alkenes with 1 produced bicyclo[3.1.0]hexane and bicyclo[4.1.0]heptane derivatives, respec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::218d8e32426f6e81ef75bf346b1fb0d7
https://doi.org/10.1016/s0040-4039(01)00465-8
https://doi.org/10.1016/s0040-4039(01)00465-8
Publikováno v:
European Journal of Organic Chemistry. 2001:155-161
Titanocene(II)-promoted ring-closing metathesis of the titanium carbene complexes prepared from [2,2-bis(phenylthio)ethyl](but-3-enyloxy)dimethylsilanes or dimethyl(prop-2-enyl)silyl ethers of 3,3-bis(phenythio)propanols gave seven-membered cyclic un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5fb3ad0f8d2de19f118d00091c06575
https://doi.org/10.1002/1099-0690(200101)2001:1<155::aid-ejoc155>3.0.co
https://doi.org/10.1002/1099-0690(200101)2001:1<155::aid-ejoc155>3.0.co
Publikováno v:
Tetrahedron Letters. 41:8377-8381
Preparation of allylsilanes by the Cp 2 Ti[P(OEt) 3 ] 2 ( 1 )-promoted reaction of 2,4-bis(phenylthio)but-3-enylsilanes 5 is described. The olefination of carbonyl compounds 6 using the silanes 5 and the low-valent titanium species 1 produced alka-2,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3199dc244e95c321230c611079bbb4c
https://doi.org/10.1016/s0040-4039(00)01477-5
https://doi.org/10.1016/s0040-4039(00)01477-5
Publikováno v:
Tetrahedron. 56:4859-4869
The ring-closing metathesis proceeded to give cycloalkenes in good yields when diphenyl thioacetals having a carbon–carbon double bond were treated with the low-valent titanium species Cp2Ti[P(OEt)3]2 in THF at room temperature and then at reflux.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e984f6f195faaae8469082a4f97b06c
https://doi.org/10.1016/s0040-4020(00)00201-5
https://doi.org/10.1016/s0040-4020(00)00201-5
Publikováno v:
Polyhedron. 19:593-596
The preparation of carbocyclic and heterocyclic compounds by the low-valent titanium species-promoted intramolecular reactions of thioacetals was studied. The cyclization of thioacetals having an olefin moiety proceeded with the loss of terminal olef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7d1cf9ddf3c421370071baa205c3493
https://doi.org/10.1016/s0277-5387(99)00388-5
https://doi.org/10.1016/s0277-5387(99)00388-5
Publikováno v:
Tetrahedron. 56:763-770
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of ω,ω-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)3]2 and the following hydrolysis gave ω-hydroxy ketones in good yields.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::819dc1718f86e5d0745947c301701192
https://doi.org/10.1016/s0040-4020(99)01091-1
https://doi.org/10.1016/s0040-4020(99)01091-1
Publikováno v:
Tetrahedron Letters. 41:65-68
Ketones were obtained in good yields by titanocene(II)-promoted reaction of thioacetals with alkanenitriles. The regioselective formation of α-substituted ketone was observed when the reaction was carried out in the presence of methyl iodide or benz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79ce06d7016bb78f32aed8bd343442b2
https://doi.org/10.1016/s0040-4039(99)02001-8
https://doi.org/10.1016/s0040-4039(99)02001-8
Publikováno v:
Synlett. 1999:1029-1032
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a68e36aa4a33b2860fe79787982a76e
https://doi.org/10.1055/s-1999-2777
https://doi.org/10.1055/s-1999-2777
Publikováno v:
Tetrahedron Letters. 40:5353-5356
The desulfurization of 1,3-bis(phenylthio)alk-1-enes with the low valent titanium species Cp 2 Ti[P(OEt) 3 ] 2 and subsequent reaction with tert -alkyl chlorides gave the terminal olefins regioselectively. The similar reactions also took place when
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4730032c77ea0e23090c7aed3c5c1854
https://doi.org/10.1016/s0040-4039(99)00975-2
https://doi.org/10.1016/s0040-4039(99)00975-2