Transformations of N-(2-acylaryl)benzamides and their analogs under the Camps cyclization conditions

Transition-Metal-Free Cross-Coupling of Acetals and Grignard Reagents To Form Diarylmethyl Alkyl Ethers and Triarylmethanes

“…1 H NMR (400 MHz, CDCl 3 ):  = 7.34-7.28 (m, 4 H), 7.24-7.20 (m, 1 H), 6.83 (d, J = 19.9 Hz, 3 H), 5.13 (s, 1 H), 4.22-4.17 (m, 4 H), 3.35 (s, 3 H) 13. C NMR (101 MHz, CDCl 3 ):  = 143.5, 143.0, 142.3, 135.6, 128.5, 127.5, 126.8, 120.2, 117.2, 116.0, 85.0, 64.4, 57.1.The spectroscopic data match the literature 21. …”

Photodriven Dehydrogenative Homocoupling of Benzylic C–H Bonds Forming Strained C–C Bonds

“…NiBr2(dtbbpy), [1] Ir[dF(CF3)ppy]2(dtbbpy)PF6, [2] 9-methylfluorene 9, [3] 1,1'diphenylmethyl methyl ether 23, [4] and diphenylmethyl ethyl ether 25 [5] were synthesized following the method reported in the literatures. 2-Isopropyl-1-benzothiophene 5 was synthesized from benzo[b]thiophen-2-ylboronic acid and 2-iodopropane following the method reported in ref [6].…”

“…The most typical conventional method is reductive homo-coupling of tert-alkyl halides (or pseudohalides) using metallic reductants such as lithium, magnesium, and a combination of titanium and lithium aluminum hydride. 1 Decarboxylative dimerization of a,adisubstituted carboxylic acids, 2 denitrogenation of azo compounds, 3 photodecarbonylation of ketones, 4 and oxidative coupling of hydrocarbons using a peroxide as a sacrificial oxidant 5 are alternatively available for homo-coupling of two tertiary carbon radicals.…”

Upgrading AquaSolv Omni (AqSO) biorefinery: access to highly ethoxylated lignins in high yields through reactive extraction (REx)

“…This result was further confirmed by the decrease in both aliphatic -OH and -COOH groups obtained for the ethoxylated samples compared to blank experiments by 31 P NMR analysis (compare S1 and S3-4 in Table 1). Cross peaks were assigned based on the literature data [50][51][52] and Chemdraw simulations. In addition, a signal at δ H /δ C = 4.0-4.1/58.9-60.1 was detected with good separation and tentatively assigned to the -CH 2group in ethoxy aryl esters (CH 3 CH 2 OCOR with R = aryl; Table 2, entry 4) based on Chemdraw simulations and the literature data.…”