40029-70-7Relevant academic research and scientific papers
Ruthenium-Catalyzed Cyclocarbonylation of Allenyl Alcohols and Amines: Selective Synthesis of Lactones and Lactams
Yoneda, Eiji,Zhang, Shi-Wei,Zhou, Da-Yang,Onitsuka, Kiyotaka,Takahashi, Shigetoshi
, p. 8571 - 8576 (2007/10/03)
Allenyl alcohols such as 4-hydroxybuta-1,2-dienes and 5-hydroxypenta-1,2-dienes having a variety of substituents undergo cyclocarbonylation in the presence of a ruthenium catalyst under mild conditions selectively to give five- and six-membered lactones in a high yield with 100% atom economy. 5-Aminopenta-1,2-dines are also cyclocarbonylated to give γ-lactams. A possible carbonylation mechanism involving a ruthenium cluster intermediate is proposed on the basis of experimental results.
N-Phthaloylglycine-Derived Strigol Analogues. Influence of the D-Ring on Seed Germination Activity of the Parasitic Weeds Striga hermonthica and Orobanche crenata
Thuring, Jan Willem J. F.,Bitter, Harry H.,De Kok, Margreet M.,Nefkens, Gerard H. L.,Van Riel, Annemiek M. D. A.,Zwanenburg, Binne
, p. 2284 - 2290 (2007/10/03)
Several strigol analogues with modifications in the D-ring were synthesized and assayed for germination stimulatory activity of seeds of Striga hermonthica and Orobanche crenata. All of these D-ring analogues are derived from N-phthaloylglycine as the common ABC-fragment. It was concluded that the correct structure of the 2(5H)-furanone D-ring is essential to retain full biological activity.
O-SILYLATED ENOLATE PHENYLTHIOALKYLATION: a SYNTHESIS OF α,β-UNSATURATED 5- AND 6-MEMBERED LACTONES.
Khan, Hassan A.,Paterson, Ian
, p. 5083 - 5084 (2007/10/02)
ZnBr2-catalysed phenylthioalkylation of keten bis(trimethylsilyl)acetals, obtained from carboxylic acids, with appropriate α-chlorosulphides can be used to prepare γ- and δ-lactones.
