Wanfei Yang’s research while affiliated with South China University of Technology and other places

... Synthesis of b-lactone derivatives (1027, Scheme 444) via onepot cascade annulation of alkynoate (1025) with but-3-enoic acid (1026) catalyzed by palladium chloride (PdCl 2 ) and silver nitrate (AgNO 3 ) has been achieved by Jiang and co-workers in 1-ethyl hydroxyl-3-methylimidazolium chloride [C 2 OHmim][Cl] and acetonitrile (5:1) at rt for 12-24 h [623]. The ILs promoted the activation of Pd catalysts which promoted trans-chloropalladation of 1025 to get vinyl palladium, followed by insertion of 1026 and reductive elimination to yield 1027. ...

Reference:

Recent advancements of applications of ionic liquids in synthetic construction of heterocyclic scaffolds: A spotlight

... Since 2014, we have also successively developed as eries of aerobico xidative allylic CÀHf unctionalizations of alkenes, withO 2 as the sole oxidant participating in the cycle (Scheme 28). Many different kinds of allylic polyfluoroarene derivatives, [46] allylic azides, [47] a,b-unsaturated esters, [48] quinoline derivatives, [49] a,b-unsaturated aldehydes, and allylic alcohols [50] were appliedi nt his system. ...

Reference:

Palladium‐Catalyzed Oxidation Reactions of Alkenes with Green Oxidants

... ILs were usually used as green reaction media because of their unique chemical and physical properties, such as high thermal stabilities, negligible vapor pressures, and nonflammability[39][40][41][42][43][44]. Recently, ILs have been employed as solvents in transition-metal-catalyzed C–H activation reactions[45][46][47][48][49]. However, it is important to note that there are few examples of the C–H bond activation reaction using classical heterocyclic ionic liquids as promoters or catalysts. ...

Reference:

The Synthesis of 2-Aminobenzoxazoles Using Reusable Ionic Liquid as a Green Catalyst under Mild Conditions

... An example is Nakamura and co-workers' seminal report of the iron-catalysed direct allylic arylation of olefins via C-H activation; Grignard reagents were required, which limited the functional group tolerance of the method (Fig. 1a) 14 . Further related developments have since been made by our group and others via an oxidative mechanism using boronic acids 15-18 or electron-poor arenes 19,20 . ...

Reference:

Allylic C(sp 3 )-H arylation of olefins via ternary catalysis

... Furthermore, the synthesis of allylic azide from alkenes has been accomplished through C-H oxidation. One example is the direct azidation of certain alkenes, as reported by Jiang [24]. Jiang's method utilizes palladium catalysts in conjunction with molecular oxygen and affords moderate yields after a 24 h reaction period. ...

Reference:

Synthesis of a New α-Azidomethyl Styrene from Safrole via a Dearomative Rearrangement