143262-07-1Relevant academic research and scientific papers
Development of isomerization and cycloisomerization with use of a ruthenium hydride with N-heterocyclic carbene and its application to the synthesis of heterocycles
Arisawa, Mitsuhiro,Terada, Yukiyoshi,Takahashi, Kazuyuki,Nakagawa, Masako,Nishida, Atsushi
, p. 4255 - 4261 (2007/10/03)
A pure ruthenium hydride complex with N-heterocyclic carbene (NHC) ligand was efficiently generated from the reaction of a second-generation Grubbs ruthenium catalyst with vinyloxytrimethylsilane and unambiguously characterized. This ruthenium hydride complex showed high catalytic activity for the selective isomerization of terminal olefin and for the cycloisomerization of 1,6-dienes. These reactions of N-allyl-o-vinylaniline lead to novel synthetic methods for heterocycles such as indoles and 3-methylene-2,3-dihydroindoles, which are useful synthons for bioactive natural products. These procedures address an important issue in diversity-oriented synthesis.
SYNTHESIS OF 4-, 5-, 6- AND 7-SUBSTITUTED N-TOSYLINDOLES FROM SUBSTITUTED ANILINES
Murai, Yasushi,Kobayashi, Shougo,Inoue, Seiichi,Sato, Kikumasa
, p. 1017 - 1029 (2007/10/02)
4-, 5-, 6-, and 7-Substituted N-tosylindoles are prepared from N-tosylanilides, carrying 2-acetoxy-1-(isopropylthio)ethyl group at the ortho position, which can be prepared from substituted anilines and dialkyl sulfide by sigmatropic rearrangement.
