Results 261 to 270 of about 140,419 (292)

Titanium‐Mediated Rearrangement of Bis(alkynyl)boranes: B–C Activation vs C–H Activation

Angewandte Chemie International Edition, Accepted Article.
Reactions between Rosenthal’s titanocene (Cp2Ti) and decamethyltitanocene (Cp*2Ti) synthons with various bis(alkynyl)boranes were investigated. A series of titanium‐fused boracyclobutenes were obtained through the reaction of the Cp*2Ti synthon with (Me3Si)2NB(CCR)2 or PhB(CCPh)2.
Chenchang Ma, Alexander Matler, Shuai Zhu, Thayalan Rajeshkumar, Laurent Maron, Qing Ye   +5 more
wiley   +1 more source

Recent Advancements in the Cyclization Strategies of 1,3-Enynes Towards the Synthesis of Heterocyclic/Carbocyclic Frameworks. [PDF]

Chem Asian J
Sakla AP, Aaghaz S, Ahmed S, Neshat N, Kamal A.   +4 more
europepmc   +1 more source

Signature of click chemistry in advanced techniques for cancer therapeutics. [PDF]

RSC Adv
Ragab SS.
europepmc   +1 more source

1,3-Dipolar cycloaddition leading to N-acylated pyrrolidines and 2,5-dihydropyrroles.

, 1983
Kazuo Achiwa, Tadashi Motoyama, Minoru Sekiya   +2 more
openalex   +2 more sources

β‐Quaternary α‐Amino Acids via Iridium‐Catalyzed Branched and Enantioselective Hydroalkylation of 1,1‐Disubstituted Styrenes

Angewandte Chemie International Edition, Accepted Article.
A cationic Ir(I)‐complex modified with the chiral diphosphine DM‐SEGPHOS mediates the hydroalkylation of diverse α‐methyl styrenes with N‐aryl glycine derivatives. The processes occur with complete branched selectivity and high enantioselectivity. Styrenes possessing higher α‐alkyl substituents also participate to provide the targets with moderate to ...
Fenglin Hong, L. Anders Hammarback, Yihong Wang, Craig M. Robertson, John Bower   +4 more
wiley   +1 more source

Not So Bioorthogonal Chemistry. [PDF]

J Am Chem Soc
Schauenburg D, Weil T.
europepmc   +1 more source

[4+2]-Cycloaddition to 4-Demethoxycarbazomycin

, 1987
Ulf Pindur, L. PFEUFFER
openalex   +1 more source

Phosphinoisocyanide Cyclisation: Generation of Azaphospholylidene (NPHC) Ligands

Angewandte Chemie International Edition, Accepted Article.
Phosphinoisocyanide complexes undergo facile [3+2] cycloaddition reactions with activated alkynes to afford the first azaphospholylidene complexes which are rare examples of N,P‐heterocyclic carbenes (NPHC). In addition to quantifying the donor/acceptor properties of this new class of carbene, their transmetallation reactions are also described.
Anthony Francis Hill, Ryan M. Kirk
wiley   +1 more source

Ti-catalyzed 1,2-Diamination of Alkynes Using 1,1-Disubstituted Hydrazines. [PDF]

J Am Chem Soc
Karmakar PS, Kakiuchi Y, Kim J, Harris MR, Huh DN, Sell AG, Copéret C, Tonks IA.   +7 more
europepmc   +1 more source

Mesoionic Six-membered Heterocycles, XVII. Cycloaddition of Benzyne to Mesoionic Pyrimidines

, 1983
Thomas Kappe, Dietmar Pocivalnik
openalex   +1 more source