508225-73-8Relevant articles and documents
Stereoselective Synthesis of Tetrahydroisoquinolines from Chiral 4-Azaocta-1,7-diynes and 4-Azaocta-1,7-enynes
Sirvent, Ana,García-Mu?oz, M. Jesús,Yus, Miguel,Foubelo, Francisco
, p. 113 - 126 (2019/12/30)
The N-propargylation of enantioenriched homopropargylic amine derivatives 3 proceeds in high yields under basic conditions. The resulting 4-azaocta-1,7-dynes 5 were transformed into 1,2,3,4-tetrahydrosioquinolines 7 bearing substituents at 3-, 6- and 7-positions, upon reaction with symmetrical alkynes, through a [2+2+2] cyclotrimerization promoted by Wilkinson catalyst. Ruthenium-catalyzed ring closing metathesis of azaocta-1,7-enynes 9a and 15a gave 1,3-dienes 10a and 16a, respectively, in high yields. Tetrahydroisoquinolines 12a and 18a, with a substitution pattern in the aromatic ring different to that of compounds 7, were prepared by a [4+2] cycloaddition of dimethyl acetylenedicarboxylate with dienes 10a and 16a, respectively.
First sonochemical, simple and solvent-free synthesis of chiral tert-butanesulfinimines using silica supported p-toluenesulfonic acid
Appa, Rama Moorthy,Lakshmidevi, Jangam,Siva Prasad, Sana,Muralidhar, Baitinti,Ramesh Naidu, Bandameeda,Narasimhulu, Manchala,Venkateswarlu, Katta
supporting information, p. 56 - 64 (2019/01/18)
A solvent-free, versatile procedure has been developed for the effective synthesis of tert-butanesulfinylimines of a variety of aldehydes using chiral tert-butanesulfinamides under green, sonochemical conditions. This method utilizes silica supported p-to
Multifunctional 1,3-diphenylguanidine for the carboxylative cyclization of homopropargyl amines with CO2 under ambient temperature and pressure
Gao, Xiao-Tong,Xie, Shi-Liang,Zhou, Feng,Wu, Hai-Hong,Zhou, Jian
supporting information, p. 14303 - 14306 (2019/12/03)
Herein, we report that 1,3-diphenylguanidine (DPG) could be utilized for the carboxylative cyclization of homopropargyl amines with CO2 under ambient temperature and pressure, in combination with AgSbF6, which enabled the synthesis o