108974-43-2

Upstream product

• 64-04-0 phenethylamine 
• 3535-37-3 3,4-dimethoxybenzoic acid chloride 
• 1262842-05-6 C₂₄H₂₅NO₄S 
• 119-65-3 isoquinoline 
• 6315-89-5 3,4-dimethoxyaniline 
• 93598-25-5 3,4-dimethoxy-N-(2-phenylethyl)benzamide 
• 101878-08-4 3,4-dimethoxy-benzoic acid styrylamide 
• 93598-26-6 1-(3,4-dimethoxy)phenyl-3,4-dihydroisoquinoline 

Relevant academic research and scientific papers

Total syntheses of menisporphine and daurioxoisoporphine c enabled by photoredox-catalyzed direct C-H arylation of isoquinoline with aryldiazonium Salt

Isoquinoline alkaloids are attractive natural products due to their diverse chemical structures as well as remarkable bioactivities. Herein, we report the concise total syntheses of two isoquinoline alkaloids, menisporphine and daurioxoisoporphine C, through a mild and efficient photoredox-catalyzed direct C-H arylation of isoquinoline core with aryldiazonium salt. This new strategy is complementary to the conventional isoquinoline synthesis and would provide us a useful means to achieve a more convergent and flexible approach to access diverse isoquinoline structures.

Efficient and practical one-pot conversions of n- tosyltetrahydroisoquinolines into isoquinolines and of N-tosyltetrahydro-β- carbolines into β-carbolines through tandem β-elimination and aromatization

An efficient, practical, and general method for conversions of N-tosyltetrahydroisoquinolines (N-tosyl-THIQs) into isoquinolines and of N-tosyltetrahydro-β-carbolines (N-tosyl-THBCs) into β-carbolines is described. Treatment of N-tosyl-THIQs or N-tosyl-THBCs with base in dimethyl sulfoxide afforded dihydroisoquinolines or dihydro-β-carbolines as intermediates, and these were then oxidized in situ by molecular oxygen to furnish isoquinolines or β-carbolines in good to high yields. Both one-pot conversions occurred through tandem β-elimination and aromatization. An efficient method for conversions ofN-tosyltetrahydroisoquinolines (N-tosyl-THIQs) and N-tosyltetrahydro-β-carbolines (N-tosyl-THBCs) into isoquinolines and β-carbolines is described. Treatment ofN-tosyl-THIQs or N-tosyl-THBCs with base affords dihydroisoquinolines or dihydro-β- carbolines. These can be oxidized in situ by molecular oxygen to furnish isoquinolines or β-carbolines. Copyright