ChemInform Abstract: INTRAMOLECULAR CYCLIZATION OF N,N-BIS(OLIGOOXYETHYLENE)AMINES: A NEW SYNTHESIS OF MONOAZA CROWN ETHERS

1983 ◽  
Vol 14 (16) ◽  
Author(s):  
H. MAEDA ◽  
S. FURUYOSHI ◽  
Y. NAKATSUJI ◽  
M. OKAHARA
Keyword(s):  
Crown Ethers ◽  
Intramolecular Cyclization ◽  
New Synthesis

Intramolecular cyclization of N,N-di(oligooxyethylene)amines: A new synthesis of monoaza crown ethers

Tetrahedron ◽  
1982 ◽  
Vol 38 (22) ◽  
pp. 3359-3362 ◽  
Author(s):  
Hirokazu Maeda ◽  
Shigeo Furuyoshi ◽  
Yohji Nakatsuji ◽  
Mitsuo Okahara
Keyword(s):  
Crown Ethers ◽  
Intramolecular Cyclization ◽  
New Synthesis

ChemInform Abstract: NEW SYNTHESIS OF N-ALKYL MONOAZA CROWN ETHERS

1979 ◽  
Vol 10 (9) ◽  
Author(s):  
P. L. KUO ◽  
M. MIKI ◽  
I. IKEDA ◽  
M. OKAHARA
Keyword(s):  
Crown Ethers ◽  
New Synthesis

High-pressure functionalization of diaza-crown ethers: new synthesis of silver(1+) ion-specific binders

1992 ◽  
Vol 57 (2) ◽  
pp. 542-547 ◽  
Author(s):  
Hiroshi Tsukube ◽  
Hiroyuki Minatogawa ◽  
Megumi Munakata ◽  
Mitsuo Toda ◽  
Kiyoshi Matsumoto
Keyword(s):  
High Pressure ◽  
Crown Ethers ◽  
New Synthesis ◽  
Diaza Crown Ethers

Reactions of alkoxyaryloxycarbenes with tethered triple bonds: a new synthesis of substituted benzofurans

1997 ◽  
Vol 75 (9) ◽  
pp. 1256-1263 ◽  
Author(s):  
Karim Kassam ◽  
Paul C. Venneri ◽  
John Warkentin
Keyword(s):  
High Temperatures ◽  
Intramolecular Cyclization ◽  
Triple Bond ◽  
Triple Bonds ◽  
New Synthesis ◽  
Ketene Acetal

Cyclic 3-alkoxy-3-aryloxyvinylcarbenes can be generated by a highly exo-selective intramolecular cyclization of a dioxycarbene onto a tethered triple bond. Like their dialkoxy counterparts, the 3-alkoxy-3-aryloxyvinylcarbene intermediates are capable of interesting reactions. In contrast to 3,3-dialkoxyvinylcarbenes, which undergo a formal [3 + 2] cycloaddition with highly electron-deficient olefins such as benzylidenemalononitrile, 3-alkoxy-3-aryloxyvinylcarbenes undergo a highly diastereoselective [1 + 2] cycloaddition with benzylidenemalononitrile to give cyclopropylketene acetals. At high temperatures, those cyclopropylketene acetals undergo a clean vinylcyclopropane rearrangement in which the stereochemical integrity of the cyclopropane is retained. Keywords: carbene, alkoxyaryloxy, [1 + 2] cycloaddition, ketene acetal, vinylcyclopropane rearrangement, oxadiazoline.

ChemInform Abstract: A New Synthesis of Indoles via Intramolecular Cyclization of o-Alkynyl N,N-Dialkylanilines Promoted by KOt-Bu/DMSO.

ChemInform ◽  
2015 ◽  
Vol 46 (22) ◽  
pp. no-no
Author(s):  
Yan-yan Chen ◽  
Jia-hua Chen ◽  
Niu-niu Zhang ◽  
Lin-miao Ye ◽  
Xue-Jing Zhang ◽  
...  
Keyword(s):  
Intramolecular Cyclization ◽  
New Synthesis
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