Yashmin, Sabina published the artcileDMSO-assisted environmentally benign synthesis of benzo[c]-chromeno[4,3,2-gh]phenanthridines by remote oxidative hetero cross-coupling cyclization and aromatization reaction, SDS of cas: 19652-33-6, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(39), 5853-5856, database is CAplus and MEDLINE.
An unprecedented metal-free and catalyst-free synthesis of benzo[c]chromeno[4,3,2-gh]phenanthridine derivatives such as I and II, a class of 1,6-diheterophenalenoid heterocycle, was reported for the first time. The oxidative cross-coupling reaction for the remote cyclization is achieved through the in situ generated o-quinone methide intermediate followed by an electrocyclic ring closure reaction. The aromatization of the cyclohexane ring is achieved by sequential H shift, hydroxylation, and elimination reaction. DMSO-assisted concomitant cyclization and aromatization reactions are also disclosed for the first time.
Chemical Communications (Cambridge, United Kingdom) published new progress about 19652-33-6. 19652-33-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Benzene,Phenol,Aldehyde, name is 5-Bromo-3-chloro-2-hydroxybenzaldehyde, and the molecular formula is C12H14IN, SDS of cas: 19652-33-6.
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