Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Yousuke Otake"'
Publikováno v:
Organic Letters. 11(No. 3):689-692
A cationic rhodium(I)/BIPHEP complex catalyzes amide-directed regioselective alkenylations of olefinic or aromatic sp(2) C-H bonds in good yields under mild reaction conditions. The use of a 1-pyrrolidinecarbonyl group as a directing group dramatical
Publikováno v:
Progress of Digestive Endoscopy. 61:48-52
ChemInform Abstract: Rhodium-Catalyzed Convenient Synthesis of Functionalized Tetrahydronaphthalenes
Autor:
Ken Tanaka, Rie Tanaka, Hiromi Sagae, Yayoi Sawada, Maliny Thammathevo, Yousuke Otake, Yusuke Aida
Publikováno v:
ChemInform. 41
Convenient as well as convergent synthesis of functionalized tetrahydronaphthalenes has been accomplished under mild reaction conditions by the cationic rhodium(I)/H 8 -BINAP complex-catalyzed [2+2+2] cycloaddition of 1,7-octadiyne derivatives with f
Publikováno v:
ChemInform. 40
We have established that a cationic rhodium(I)/H8-binap complex catalyzes [2+2+2] cycloadditions of a variety of 1,6- and 1,7-diynes with both electron-deficient and electron-rich carbonyl compounds, leading to dienones in high yield under mild react
Publikováno v:
ChemInform. 40
A cationic rhodium(I)/BIPHEP complex catalyzes amide-directed regioselective alkenylations of olefinic or aromatic sp2 C−H bonds in good yields under mild reaction conditions. The use of a 1-pyrrolidinecarbonyl group as a directing group dramatical
Publikováno v:
ChemInform. 39
Publikováno v:
ChemInform. 39
We have developed the first catalytic cycloisomerization of 1,6- and 1,7-diynes leading to trienes and vinylpyrroles by using a cationic rhodium(I)/Segphos complex (2.5−10 mol %) and 1,2-cyclohexanedione (100 mol %). 1,2-Cyclohexanedione may effect
Publikováno v:
ChemInform. 38
We have determined that a cationic rhodium(I)/H8-BINAP complex catalyzes a [2 + 2 + 2] cycloaddition of both activated and unactivated carbonyl compounds with 1,6-diynes leading to dienones in high yields. On the other hand, unactivated aryl ketones
Publikováno v:
Organic letters. 9(20)
We have developed the first catalytic cycloisomerization of 1,6- and 1,7-diynes leading to trienes and vinylpyrroles by using a cationic rhodium(I)/Segphos complex (2.5−10 mol %) and 1,2-cyclohexanedione (100 mol %). 1,2-Cyclohexanedione may effect
Autor:
Mitso Satake, Yousuke Otake, Yukio Muramatsu, Noriyuki Moriyama, Gen Iinuma, Takayuki Akasu, Kunihisa Miyakawa, Takahiro Fujii, Ukihide Tateishi, Toshiaki Kobayashi
Publikováno v:
SPIE Proceedings.
Recently, CT colonography has been recognized as an effective option for evaluating colorectal polyps in the USA. We have applied this technique to preoperative staging of colorectal cancer patients with a contrast-enhanced multi-detector row CT (MDC