Discovery of 140924-50-1

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Electric Literature of 140924-50-1, An article , which mentions 140924-50-1, molecular formula is C48H54N6O4. The compound – (Dhq)2phal played an important role in people’s production and life.

A new asymmetric synthesis of bicyclic pyrazolidinones through an alkaloid-catalyzed formal [3 + 2] cycloaddition of in situ generated ketenes and azomethine imines is described. The products were formed in good to excellent yields (52-99% for 17 examples), with good to excellent diastereoselectivity (dr 5:1 to 27:1 for 11 examples), and with excellent enantioselectivity in all cases (?96% ee). This method represents the first unambiguous example of an enantioselective reaction between ketenes and a 1,3-dipole.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 140924-50-1, help many people in the next few years., Electric Literature of 140924-50-1

Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare