442882-27-1

Upstream product

• 89-00-9 Pyridine-2,3-dicarboxylic acid 
• 4664-00-0 2,3-pyridinedicarboximide 
• 824-94-2 p-methoxybenzyl chloride 
• 2393-23-9 4-methoxy-benzylamine 
• 699-98-9 Pyridine-2,3-dicarboxylic anhydride 

Downstream Products

• 158060-81-2 2,8-diazabicyclo[4.3.0]nonane 
• 5654-94-4 2,8-diazabicyclo-[4.3.0]-nonane 
• 929206-61-1 7-acetoxy-6,7-dihydro-6-(4-methoxybenzyl)-5H-pyrrolo[3,4-b]pyridin-5-one 
• 902572-92-3 7-hydroxy-6,7-dihydro-6-(4-methoxybenzyl)-pyrrolo[3,4-b]pyridin-5-one 

Relevant academic research and scientific papers

(S, S) - 2,8-diazabicyclo [4.3.0] nonane preparation method

The invention relates to a novel preparation method of (S,S)-2,8-diazabicyclo[4.3.0]. The method comprises the steps that: 2,3-pyridine dicarboxylic acid derivative and amide are subjected to condensation, such that 2,3-pyridine dicarboximide is formed; 2,3-pyridine dicarboximide is subjected to protection and hydrogenation reduction, such that 8-substituted-7,9-dioxo-2,8-diazabicyclo[4.3.0]nonane is produced; the product is reduced in a borohydride reduction system, such that 8-substituted-2,8-diazabicyclo[4.3.0]nonane is obtained; the product is subjected to optical-active organic acid resolution, such that 8-site protection group is removed, and the final product is obtained. Or, 2,3-pyridine dicarboximide is directly subjected to hydrogenation reduction, such that 7,9-dioxo-2,8-diazabicyclo[4.3.0]nonane is produced; the product is directly reduced in a borohydride reduction system, such that 2,8-diazabicyclo[4.3.0]nonane is produced; the 2,8-diazabicyclo[4.3.0]nonane is subjected to optical-active organic acid resolution, such that the final product is directly obtained. The method provided by the invention is advantaged in simple reaction route. The raw materials are cheap and easy to obtain. The reaction conditions are mild and easy to control. The method is suitable for industrialized productions.

Efficient conversion of acids and esters to amides and transamidation of primary amides using OSU-6

OSU-6, an MCM-41 type hexagonal mesoporous silica with strong Bronsted acid properties, has been used to promote the high-yield conversion of carboxylic acids and esters to carboxamides as well as transamidations of primary amides in a one-pot solventless approach. A metal-free heterogeneous catalyst that promotes all of these processes has not been previously reported. OSU-6 enables these transformations to proceed in shorter times and at lower temperatures for a broad range of substrates. An added benefit is that the catalyst can be recycled and reused multiple times without significant loss of activity.

Novel and versatile methodology for synthesis of cyclic imides and evaluation of their cytotoxic, DNA binding, apoptotic inducing activities and molecular modeling study

Versatile method has been developed for synthesis of N-substituted imides. Thus, acid anhydrides, imides and dicarboxylic acids were successfully subjected to dehydrative cyclization with substituted amines using DPPOx and Et3N to afford N-substituted imides under mild conditions. The DNA binding and apoptosis induction were investigated with regard to their potential utility as cytotoxic agents. Molecular modeling methods are used to study the cytotoxic activity of the active compounds by means of molecular and quantum mechanics.

Intermolecular and intramolecular α-amidoalkylation reactions using bismuth triflate as the catalyst

(Chemical Equation Presented) Bismuth(III) triflate was found to promote the formation of stable cyclic N-acyliminium species in remarkable catalytic amounts (1 mol %). The α-amidoalkylation process seems to be effective in intermolecular and intramolecul