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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共72条记录   Oxidative conversion of functionalized 3,4-dihydropyrimidin-2(1H)-ones to the corresponding pyrimidin-2(1H)-ones using activated carbon-molecular oxygen system. [作者：Okunaga, Ken-ichi;Nomura, Yukiko;Kawamura, Kenjiro;Nakamichi, Natsuki;Eda, Kazuo;Hayashi, Masahiko;,期刊：Heterocycles, 页码：715-726 , 文章类型： 研究论文，,卷期：2008年76-1] Efficient synthesis of functionalized pyrimidin-2(1H)-ones was achieved by oxidn. of 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) using activated carbon-mol. oxygen system. Various DHPMs were easily prepd. by Biginelli react... 2-Alkylidene-1,3-dithiane monoxides as activated alkenes in rhodium-catalyzed addition reaction of arylboronic acids. [作者：Yoshida, Suguru;Yorimitsu, Hideki;Oshima, Koichiro;,期刊：Heterocycles, 页码：679-688 , 文章类型： 研究论文，,卷期：2008年76-1] 2-Methylene-1,3-dithiane 1-oxide reacts with arylboronates in the presence of a Rh catalyst in aq. dioxane to afford 2-arylmethyl-1,3-dithiane 1-oxides in good yields. Structural aspects of iodine-promoted one-pot cyclization of o-bis(methylthio)stilbenes to thieno[3,2-b]thiophene derivatives: synthetic trials of tetrathienoacenes from 1,2-bis(3-methylthiothiophen-2-yl)ethenes. [作者：Yamamoto, Tatsuya;Miyazaki, Eigo;Takimiya, Kazuo;,期刊：Heterocycles, 页码：583-593 , 文章类型： 研究论文，,卷期：2008年76-1] Attempted reactions for the synthesis of tetrathienoacenes from 1,2-bis[3-(methylthio)thien-2-yl]ethenes by I2-promoted 1-pot cyclization were described. X-ray structural anal. on the precursors indicated that the failu... Diene-transmissive hetero-Diels-Alder cycloaddition using cross-conjugated dioxatrienes: a novel synthesis of tetrahydropyran-fused aza- and thia-heterocycles. [作者：Saito, Takao;Kobayashi, Satoru;Otani, Takashi;Iwanami, Hideoki;Soda, Takayuki;,期刊：Heterocycles, 页码：227-235 , 文章类型： 研究论文，,卷期：2008年76-1] The diene-transmissive hetero-Diels-Alder methodol. was developed using cross-conjugated dioxatrienes, substituted 2-(methylene)propanedials. The initial cycloaddn. with electron-rich dienophiles, followed by the reacti... Stereoselective preparation and Cope rearrangement of 2-CF3-cis-2,3-bis(alkenyl)oxiranes: a facile route to 2-CF3-substituted oxacycles. [作者：Shimizu, Masaki;Fujimoto, Takuya;Liu, Xinyu;Takeda, Youhei;Hiyama, Tamejiro;,期刊：Heterocycles, 页码：329-351 , 文章类型： 研究论文，,卷期：2008年76-1] A facile route to 2-(trifluoromethyl)-4,5-dihydrooxepins is described, which involves stereoselective prepn. and Cope rearrangement of 2-trifluoromethyl-cis-2,3-bis(alkenyl)oxiranes. Treatment of 1,1-dichloro-2-hydroxy-... A new synthesis of dihydropyridin-2-ones from Brassard's diene and imines. [作者：Mukaiyama, Teruaki;Maruyama, Yuji;Kitazawa, Takayuki;,期刊：Heterocycles, 页码：221-225 , 文章类型： 研究论文，,卷期：2008年76-1] A new method for the synthesis of dihydropyridin-2-ones from various N-2-nitrobenzenesulfonyl (nosyl) imines and 1,3-diethoxy-1-trimethylsiloxy-1,3-butadiene (Brassard's diene) under weakly basic conditions is described.... Synthesis of diazirine possessing an acetophenone derivative as a valuable intermediate for a flavonoid photoaffinity probe. [作者：Furuta, Takumi;Ueda, Mitsuru;Hirooka, Yasuo;Tanaka, Kiyoshi;Kan, Toshiyuki;,期刊：Heterocycles, 页码：811-817 , 文章类型： 研究论文，,卷期：2008年76-1] A novel acetophenone deriv. with a diazirine moiety was prepd. as a potential intermediate for a flavonoid photoaffinity probe. The transformation to the flavanone deriv. with a diazirine moiety on the A-ring was also d... Ultrasound-assisted N-arylation of indoles without any catalyst. [作者：Xu, Hui;Lv, Lei;Fan, Ling-ling;He, Xiao-qiang;,期刊：Heterocycles, 页码：249-256 , 文章类型： 研究论文，,卷期：2008年76-1] An efficient method for the ultrasound-assisted N-arylation of indoles with haloarenes in an air atm. mediated by Cs2CO3 without any catalyst was reported. N-arylindoles were obtained in moderate to good yields from ind...