Synthesis and investigation of catalytic activity of phenylene – And biphenylene bridged bimetallic Palladium-PEPPSI complexes

Copper-free Sonogashira cross-coupling reactions: an overview

“…Commonly, all complexes demonstrated high catalytic activity with very high yields in this Sonogashira cross-coupling reaction (Scheme 60). 120 Verpoort and co-workers in 2019 demonstrated the direct harnessing of visible light energy using a new semiconducting azobenzene that relied on the colloidal porous polymer, B 3 -Azo 4 amenable to post-synthetic palladium(II)-complexation for photo-induced Sonogashira coupling reaction through polymermetal energy transfer approach. Completely, mesoporous nanosized particles of the synthesized organic network manifested excellent palladium(II) coordinating capability and gave the corresponding catalytic products at room temperature in aqueous media under aerobic conditions.…”

“…Commonly, all complexes demonstrated high catalytic activity with very high yields in this Sonogashira cross-coupling reaction ( Scheme 60 ). 120 …”

Sonogashira-Hagihara and Buchwald-Hartwig cross-coupling reactions with sydnone and sydnone imine derived catalysts

“…1 H-NMR (400 MHz, CDCl3): δ 7.33 (d, JH,H 7.8 Hz, 1 H), 7.18-7.15 (m, 1 H), 7.01 (d, JH,H 7.8 Hz, 1 H), 2.19 (br s, 1 H), 1.53 (s, 6 H), ppm. Methyl 4-(3-hydroxy-3-methylbut-1-yn-1-yl)benzoate (12). 37 Samples of 1.00 g (4.65 mmol) of methyl-4bromobenzoate and 1.2 mL (12.0 mmol) of 2-methyl-but-3-yn-2-ol were used.…”

“…8 Early reports deal with di(imidazol-1-yl-2-ylidene)methane, 9 2-(imidazol-1-yl-2-ylidene)methyl)pyridine 10 and bis(1,3-di-Ntert-butylimidazol-2-ylidene) Pd complexes 11 as catalysts. Since then considerable progress has been made with respect to new and effective NHCs, [12][13][14] abnormal NHCs, 15 and polymer-supported NHC catalysts in Sonogashira-Hagihara cross-couplings. 16 The application of N-heterocyclic carbenes in Buchwald-Hartwig cross-couplings is well-established.…”

Design, Synthesis, Characterization and Catalytic Activity in Direct Arylation Reaction of the Benzimidazole-Functionalized PEPPSI-type Pd(II)NHC Complexes bearing 4-Vynylbenzyl Group

“…(Boztepe, Künkül & Gürbüz, 2020;Gokanapalli, Motakatla & Peddiahgari, 2020;Jiao et al, 2020;Reddy, Anusha & Reddy, (2020) Šimůnek, Rybáčková, Svoboda & Kvíčala, 2020;Yingying et al, 2020) Son çalışmalar, Pd(II)NHC komplekslerinin Sonogashira, (Erdemir, Barut Celepci, Aktaş & Gök, 2019). Suzuki-Miyaura, (Aktaş, Barut Celepci, Gök & Aygün, 2018) Mizoroki-Heck (Borah, Saha, Sarma & Das, 2020;İmik, Yaşar & Özdemir, 2019) ve doğrudan arilasyon reaksiyonları gibi C-C birleştirme reaksiyonları için etkili katalizörler olarak çalışabileceğini göstermektedir.…”