Tu, Xing-Jun; Hao, Wen-Juan; Ye, Qin; Wang, Shuang-Shuang; Jiang, Bo; Li, Guigen; Tu, Shu-Jiang published the artcile< Four-Component Bicyclization Approaches to Skeletally Diverse Pyrazolo[3,4-b]pyridine Derivatives>, Synthetic Route of 118430-74-3, the main research area is pyrazolopyridine preparation; arylglyoxal aminopyrazole arylamine hydroxymethylpyranone cyclohexanedione four component cyclization.
A novel four-component bicyclization strategy has been established, allowing a flexible and practical approach to 37 examples of multicyclic pyrazolo[3,4-b]pyridines from low-cost and readily accessible arylglyoxals, pyrazol-5-amines, aromatic amines, 4-hydroxy-6-methyl-2H-pyran-2-one, and cyclohexane-1,3-diones. The polysubstituted cyclopenta[d]pyrazolo[3,4-b]pyridines were stereoselectively synthesized through a microwave-assisted special [3+2+1]/[3+2] bicyclization with good control of the spatial configuration of exocyclic double bonds. The novel [3+2+1]/[2+2+1] bicyclization resulted in 17 examples of unreported pyrazolo[3,4-b]pyrrolo[4,3,2-de]quinolones. Reasonable mechanisms for forming two new types of multicyclic pyrazolo[3,4-b]pyridines are also proposed.
Journal of Organic Chemistry published new progress about Acetals Role: RCT (Reactant), RACT (Reactant or Reagent) (arylglyoxals). 118430-74-3 belongs to class pyrazoles-derivatives, and the molecular formula is C7H11N3, Synthetic Route of 118430-74-3.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics