Jeong, Susan published the artcileMacrocyclic Triarylethylenes via Heck Endocyclization: A System Relevant to Diazonamide Synthesis, COA of Formula: C10H11N3O3S, the publication is Journal of Organic Chemistry (1998), 63(24), 8640-8641, database is CAplus.
The author’s approach the preparation of diazonamide A (I) synthesis is described. Initial results show that Heck endocyclization can form highly functionalized lactam rings containing an imbedded 1,2-diaryl-1-(5-oxazolyl)ethylene. Thus, cross-coupling of vinylstannane II (PMB = p-methoxybenzyl) with functionalized oxazole III (prepared in 2 steps from Boc-Val-OH and aminomalononitrile tosylate) gave phenol IV in 89% yield after deprotection. Peptide coupling of IV with a protected O-benzyl-3-iodotyrosine derivative, followed by Pd-catalyzed macrocyclization gave macrocycle V, which contains the diazonamide AEF ring system.
Journal of Organic Chemistry published new progress about 5098-14-6. 5098-14-6 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Salt,Sulfonic acid,Amine,Benzene, name is 2-Aminomalononitrile 4-methylbenzenesulfonate, and the molecular formula is C10H11N3O3S, COA of Formula: C10H11N3O3S.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts