Results 81 to 90 of about 18,239,073 (189)

Stereoselective intramolecular 1,3-dipolar cycloadditions

, 2001
An in depth account of intramolecular 1,3-dipolar cycloadditions involving dipoles such as nitrile oxides, silyl nitronates, H-nitrones, azides, and nitrilimines is presented with particular emphasis on the stereochemistry during the cyclo addition ...
HASSNER, A, NAMBOOTHIRI, INN
core  

Highly Regio- and Stereoselective Intramolecular 1,3-Dipolar Cycloadditions of Norbornadiene-Tethered Nitrile Oxides

, 2016
Intramolecular cycloadditions with high regio- and stereocontrol are important methods for the efficient assembly of complex molecular structures. Efficient routes to the synthesis of norbornadiene-tethered nitrile oxides have been developed, and their ...
Robert Jordan (346146), Sean Handerson (3027795), William Tam (640256), Carol Yip (3027792)   +3 more
core   +2 more sources

Transition metal catalyzed 1-3-dipolar cycloaddition of carbethoxycarbene to acrylonitrile [PDF]

Tetrahedron Letters, 1974
Paulissen, R., Moniotte, Ph, Hubert, André J., Teyssié, Philippe   +3 more
openaire   +2 more sources

1, 3-Dipolar Cycloaddition of Nitrones to Enamines

Nippon kagaku zassi, 1971
Otohiko TSUGE, Masashi TASHIRO, Yoko NISHIHARA   +2 more
openaire   +2 more sources

1, 3-Dipolar Cycloaddition Reaction of Aziridinedicarboximide

Chemical and Pharmaceutical Bulletin, 1968
OIDA, SADAO, OHKI, EIJI
openaire   +2 more sources

Metal-Free Sequential [3 + 2]-Dipolar Cycloadditions using Cyclooctynes and 1,3-Dipoles of Different Reactivity

, 2016
Although metal-free cycloadditions of cyclooctynes and azides to give stable 1,2,3-triazoles have found wide utility in chemical biology and material sciences, there is an urgent need for faster and more versatile bioorthogonal reactions.
Brian C. Sanders (2234539), Petr A. Ledin (1560535), Geert-Jan Boons (212062), Frédéric Friscourt (1560532), Ngalle Eric Mbua (2101333), Jun Guo (85069), Thomas J. Boltje (1507732), Selvanathan Arumugam (1312254), Vladimir V. Popik (1312257)   +8 more
core   +1 more source

(I) Synergistic Dual Pd(0)/Rh(II)-Catalyzed Divergent Dipolar [3+3] and [4+3] Cycloadditions (II) Ligand-controlled Stereodivergent Pd(0)-Catalyzed [2+3] Cycloadditions

, 2019
The major purpose of the research is the development of novel catalytic reactions for regio- and stereodivergent cycloadditions to construct heterocyclic moieties. Three different types of divergent catalytic reactions have been investigated.
전현지
core   +1 more source

Organocatalytic and stereoselective [3+2] cycloadditions of azomethine imines with alpha,beta-unsaturated aldehydes

, 2006
Bipyrazolidin-3-one derivatives are biologically significant compounds and their importance has increased in the past decades. In this paper, the first stereoselective [3 + 2] dipolar cycloadditions of azomethine imines with alpha,beta-unsaturated ...
Du, W, Yuan, XH, Wu, Y, Ding, LS, Chen, YC, Sichuan Univ, W China Sch Pharm, Key LDrug Targeting Educ Minist, Chengdu 610041, Peoples R China., Chen, W, Li, R, Chen, YC   +7 more
core  

Catalytic [6 + 3] cycloaddition for the synthesis of medium-sized ring systems: a critical review. [PDF]

RSC Adv
Archna, Kumar G, Chawla PA, Kumar R, Bhargava G.   +4 more
europepmc   +1 more source

Highly Stereoselective (3+2) Cycloadditions of Levoglucosenone (LGO) with the In Situ-Generated Thiocarbonyl <i>S</i>-Methanides (Thiocarbonyl Ylides) Derived from Aromatic and Cycloaliphatic Thioketones. [PDF]

Molecules
Mlostoń G, Celeda M, Palusiak M, Heimgartner H, Witczak ZJ.   +4 more
europepmc   +1 more source