What is Carbolong? Carbolong is a new class of multi-functional chain compounds containing multiple alkynyl groups. J&K is proud to exclusively supply Carbolong with following advantages: High activity and good selectivity Carbolong contains two excellent reactivity structure units propargyl alcohol and bialkynl. High efficiency Carbolong is able to achieve a variety...

Chiral imidazolidinone organocatalysts (developed by Professor David MacMillan in 2000) are small, bench-stable, and environmentally friendly organic molecules designed to be highly effective at enantiofacial discrimination (in lieu of big enzymes and metal catalysts) under a facile aerobic atmosphere. Excellent yields were reported by MacMillan et al. with a benzyl-substituted...

Coined by K. Barry Sharpless, Hartmuth C. Kolb, and M.G. Finn in 2001, click chemistry is a term used to describe reactions that rapidly and selectively react or “click” with each other in a predictable way to form physiologically stable products with heteroatom links (C-X-C). Widely used in the modification of biomolecules, surfaces,...

Metal-catalyzed cross-couplings are widely used for the C-C bonds formation in organic synthesis, particularly for unsaturated scaffolds production. However, there were several challenges to develop a general method for the direct deoxygenative cross-coupling of free alcohols, using as native sp3-hybridized functional groups. Challenges: the in situ cleavage of strong C–O...

The ultimate guide for 9 types of chemical spills and cleanup procedures Plan for spills “Failing to plan is planning to fail”: prepare to act in a safe, timely, and effective manner during chemical spills (or releases) by walking through minor/major spill protocols, optimizing lab space and organization, and reviewing...

The six major types of fire extinguishers and the Classes of fires they are suitable for Elements of a fire There are four necessary elements of a fire: oxidizer, heat, fuel, and an uninhibited chemical chain reaction, all represented in the “fire tetrahedron”. Heat promotes the ignition temperature of the...