"One down," Leo sighed, flipping the page. "Only four hundred and twelve to go." Maya grinned, clicking her pen. "Bring it on."
The largest coefficient in the tetrazine LUMO is at the N atoms adjacent to the bridging carbons. The largest coefficient in the enamine HOMO is at the $\beta$-carbon of the enamine. The bond forms between these two largest coefficients, yielding a 1,4-disubstituted pyridazine after retro-Diels-Alder with $N_2$ extrusion. advanced organic chemistry practice problems 2021
Elias stared at the thick, unassuming booklet on his desk. The cover, printed in bland black-and-white, read: "One down," Leo sighed, flipping the page
: The best problems don't just ask for the product; they require drawing curved-arrow mechanisms for non-intuitive rearrangements (like Wagner-Meerwein or Favorskii). The largest coefficient in the enamine HOMO is
You must apply the Woodward-Hoffmann rules using the Hückel–Möbius concept. Count the number of $\pi$ electrons: 8 electrons.
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(2S,3R)-2,3-dihydroxy-3-methylpentanoic acid