Metal-free, intermolecular hydroaminations are performed upon heating aryl acetylenes and MeNHNH(2) at 140 degrees C, with preferential formation of the linear, "anti-Markovnikov" hydrazones.

The preparation of phenylsulfonyl indene derivatives and phenylsulfonyl- acetylenes from readily available alkynyl(phenyl)iodonium tetrafluoroborates and triflates was investigated using phenylsulfinate as nucleophile.

In this study, we prepared oxizolidines through 1,3-bis(diphenylphosphino)-propane (DPPP)-catalyzed mixed double-Michael reactions of β-amino alcohols with electron-deficient acetylenes. These reactions are very suitable for the diversity-oriented parallel syntheses of oxizolidines because: (i) they are performed under mild metal-free conditions and (ii) the products are isolated without compli...

An IR study of terminal acetylenes and Zn(OTf)(2) in the presence of amine bases provides evidence that is consistent with the generation of Zn-acetylides.

The proton resonance spectra of a number of acetylenes of fixed geometry were recorded in dilute CDCl3 solution and assigned. These were acetylene, equatorialand axial-cyclohexylacetylene at 60 C, 1,4-di-1-adamantylbutadiyne, 1-ethynyl-tand -c-4-tert-butylcyclohexan-r-1-ol, 2-exo-ethynylnorbornan-2-ol† and 2,2 -ethyne-1,2diyldibornan-2-ol. The aromatic acetylenes measured were phenylacetylene, ...

Palladium on charcoal serves as an efficient and reusable solid supported catalyst for the Sonogashira coupling of aryl chlorides with terminal acetylenes in the presence of a bulky, electron-rich biphenyl type ligand (XPhos), without copper co-catalyst.

A Zn-cornered, mixed-ligand, metal-organic framework (MOF) bearing TMS-protected acetylenes has been constructed and its surface decorated with organic molecules via'click chemistry', in a demonstration of selective post-synthesis functionalization.

Amide bond-forming reactions are of tremendous significance in synthetic chemistry. Methodological research has, in the past, focused on efficiency and selectivity, and these have reached impressive levels. However, the unacceptable amounts of waste produced have led the ACS GCI Roundtable to label 'amide bond formation avoiding poor atom economy' as the most pressing target for sustainable syn...