Acid-Catalyzed [4+2] Cycloaddition Reaction of 2-(Alk-2-enyl)amino-3-(N-arylimino)methyl-4-oxo-4H-pyrido[1,2-a]pyrimidines

1997 ◽  
Vol 70 (9) ◽  
pp. 2201-2207 ◽  
Author(s):  
Michihiko Noguchi ◽  
Takashi Mizukoshi ◽  
Shigeki Nishimura
Keyword(s):  
Cycloaddition Reaction ◽  
Acid Catalyzed

Synthesis of 4-heterocyclyl-hexahydro-8-methoxyfuro[3,2-c]quinolines by Lewis acid catalyzed [4 + 2]cycloaddition reaction

1986 ◽  
Vol 23 (1) ◽  
pp. 185-187 ◽  
Author(s):  
Tetsuji Kametani ◽  
Hiroko Furuyama ◽  
Yukari Fukuoka ◽  
Hajime Takeda ◽  
Yukio Suzuki ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reaction ◽  
Acid Catalyzed

Synthetic Studies towards the Total Synthesis of Indole Alkaloids Containing Indolyl Lactam Frameworks

Synlett ◽  
2020 ◽  
Author(s):  
Fu-She Han ◽  
Dong-Xing Tan
Keyword(s):  
Total Synthesis ◽  
Indole Alkaloids ◽  
Cycloaddition Reaction ◽  
Terminal Olefin ◽  
Asymmetric Reaction ◽  
Rapid Construction ◽  
Fused Ring ◽  
Acid Catalyzed ◽  
Synthetic Studies ◽  
Type Substitution

AbstractIn this account, recent progress on the synthetic studies of several monoterpene indole alkaloids, (±)-mersicarpine, misassigned (±)-tronoharine, and (±)-leuconodines D and E, is summarized. Specifically, the rationale for the design and development of the Lewis acid catalyzed SN1-type substitution and formal [3+3] cycloaddition reaction of indol-2-yl carbinols, and the Pd-catalyzed aerobic oxidative intramolecular Heck cross-coupling of indolyl amides tethered with a terminal olefin functionality, are emphasized. These key reactions set the basis for the rapid construction of the fused ring skeleton containing an all-carbon quaternary center at the indol-2-yl position.1 Introduction2 Synthetic Study of (±)-Mersicarpine3 Synthetic Study of the Misassigned (±)-Tronoharine4 Study of the Asymmetric Reaction of Indol-2-yl Carbinols5 Synthetic Study of (±)-Leuconodines D and E6 Conclusion

Application of the Lewis Acid Catalyzed [4+2]Cycloaddition Reaction to Synthesis of Natural Quinoline Alkaloids

Heterocycles ◽  
1986 ◽  
Vol 24 (12) ◽  
pp. 3385 ◽  
Author(s):  
Tetsuji Kametani ◽  
Hajime Takeda ◽  
Yukio Suzuki ◽  
Hiroko Kasai ◽  
Toshio Honda
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reaction ◽  
Quinoline Alkaloids ◽  
Acid Catalyzed

ChemInform Abstract: Chiral Phosphoric Acid Catalyzed Enantioselective 1,3-Dipolar Cycloaddition Reaction of Azlactones.

ChemInform ◽  
2016 ◽  
Vol 47 (21) ◽  
Author(s):  
Zhenhua Zhang ◽  
Wangsheng Sun ◽  
Gongming Zhu ◽  
Junxian Yang ◽  
Ming Zhang ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Cycloaddition Reaction ◽  
Dipolar Cycloaddition ◽  
Chiral Phosphoric Acid ◽  
Acid Catalyzed

Acid-catalyzed [4+3] cycloaddition reaction of N-nosyl pyrroles

Tetrahedron ◽  
2015 ◽  
Vol 71 (26-27) ◽  
pp. 4495-4499 ◽  
Author(s):  
Miki Shibata ◽  
Ryuichi Fuchigami ◽  
Ryota Kotaka ◽  
Kosuke Namba ◽  
Keiji Tanino
Keyword(s):  
Cycloaddition Reaction ◽  
Acid Catalyzed

Lewis Acid Catalyzed Three-Component [3+2] Cycloaddition Reaction Using Pentafulvene as 2π Component: An Easy Way to Construct Pentaleno(1,2-b)indoles

Synlett ◽  
2017 ◽  
Vol 28 (08) ◽  
pp. 951-956 ◽  
Author(s):  
K. Radhakrishnan ◽  
P. Santhini ◽  
S. Sarath Chand ◽  
Jubi John ◽  
R. Varma ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reaction ◽  
Acid Catalyzed
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