Atom economic palladium catalyzed novel approach for arylation of benzothiazole and benzoxazole with triarylbismuth reagents via C H activation

Modular bismacycles for the selective C–H arylation of phenols and naphthols

“…27,28,29,30 This methodology benefits further from the low cost of Bi and its salts, and the high stability and low toxicity of triarylbismuth reagents (e.g., LD50(BiPh3) = 180 g/kg 31 ). However, despite these appealing attributes, the synthetic potential of both Bi(V) and Bi(III) 32 reagents for C-H arylation has been largely overlooked. This is due to several major challenges that limit its current practicality (Fig.…”

Consecutive Oxidation/Condensation/Cyclization/Aromatization Sequences Catalyzed by Nanostructured Iron(III)‐Porphyrin Complex towards Benzoxazole Derivatives

“…Using the CHCl 3 , EtOAC, and Et 2 O as solvent, the reaction gave the desired product in only moderate yields (Table 1, entries [15][16][17]. Changing the solvent to CH 3 CN slightly increased the yield (Table 1, entry 18), whereas using MeOH, DCE, and DCM highly increased the yield (Table 1, entries [19][20][21]. Ethanol was proved to be the best option for the reaction (Table 1, entry 11).…”

“…[17][18][19] In this regard, numerous synthetic protocols for 2-substituted benzoxazole derivatives have been described in the literature (Figure 2). [20][21][22][23][24][25][26][27][28][29][30][31][32] While the strategies as mentioned above enriched approaches to 2-substituted benzoxazole derivatives, their applicability is often compromised by the use of expensive metals, utilization of harsh reaction conditions, high catalyst loading, and use of volatile and toxic organic solvents.…”

“…Furthermore, there is a remarkable interest to develop new strategies for the efficient and more applicable synthesis of 2‐substituted benzoxazole derivatives in recent years . In this regard, numerous synthetic protocols for 2‐substituted benzoxazole derivatives have been described in the literature (Figure ) …”

Copper-Promoted N-Arylation of 8-Acylaminoquinoline Compounds

“…1977 年, Matsuda 课 题组 [13] 用醋酸钯作催化剂, 三苯基铋为芳源, 实现了烯 烃的芳化反应. 在 2017 年, Nagarkar 课题组 [14] 121.7, 125.9, 126.4, 126.9, 127.4, 127.7, 128.8, 129.0, 129.3, 129.4, 129.8, 136.0, 136.7, 141.8, 144.4, 144.6, 150.8, 171.8 4, 121.6, 125.7, 126.4, 126.9, 127.5, 128.1, 128.7, 129.1, 129.3, 129.3, 129.5, 有机化学 研究论文 135.9, 140.0, 142.0, 144.4, 144.9, 150.7, 171.8 1, 112.8, 121.6, 125.7, 126.4, 126.8, 127.5, 128.1, 128.8, 129.2, 129.3, 131.1, 136.0, 142.2, 144.4, 145.1, 150.7, 160.8, 171.3 8, 126.1, 126.4, 126.8, 127.7, 127.8, 128.9, 129.2, 129.3, 129.4, 130.4, 135.8, 136.0, 141.6, 144.2, 144.4, 150.8, 170.7 8, 124.3, 126.2, 126.5, 126.9, 127.9, 128.9, 129.2, 129.3, 129.5, 130.6, 130.7, 136.0, 141.6, 144.2, 144.4, 150.8, 170.8 1, 121.6, 126.3, 126.4, 127.1, 128.1, 128.1, 128.2, 128.5, 129.6, 129.6, 134.1, 136.0, 137.9, 140.8, 143.0, 144.8, 150.6 8, 36.8, 122.0, 126.0, 126.3, 126.7, 126.9, 128.4, 128.7, 128.9, 129.5, 129.9, 136.3, 140.6, 140.8, 141.5, 143.6, 145.0, 151.4, 173.4 20.3, 33.2, 121.8, 126.1, 126.6, 126.9, 127.3, 128.0, 128.7, 128.9, 129.5, 136.1, 141.2, 144.0, 151.2, 178.8 25.5, 122.4, 125.4, 125.8, 127.0, 127.2, 127.3, 127.4, 128.7, 128.8, 128.9, 129.6, 135.8, 137.1, 141.2, 143.7, 144.7, 159.3, 172.0 5, 125.8, 126.4, 126.9, 127.0, 127.4, 128.4, 128.7, 129.0, 129.2, 129.7, 131.2, 134.5, 136.9, 141.7, 142.7, 144.7, 152.8, 171.7 9, 122.5, 123.8, 125.8, 126.0, 126.9, 127.4, 128.7, 129.0, 129.1, 129.4, 129.7, 137.0, 142.2, 144.2, 144.3, 144.8, 150.5, 171.8 5, 121.7, 125.9, 126.7, 127.0, 127.4, 128.8, 129.0, 129.3, 129.8, 131.3, 135.2, 136.4, 136.8, 141.5, 143.0, 144.8, 150.0, 171.7 124.2, 126.4, 126.8, 127.1, 127.5, 127.6, 128.6, 128.9, 129.2, 129.3, 129.7, 135.9, 137.0, 138.7, 142.0, 144.4, 144.6, 150.7, 171.8 1, 121.6, 126.4, 126.8, 127.4, 127.6, 129.0, 129.2, 129.3, 129.5, 129.7, 135.7, 136.0, 136.9, 142.0, 142.2, 144.4, 150.7, 171. …”