Cu-catalyzed C–C bond formation of vinylidene cyclopropanes with carbon nucleophiles

Abstract

The development of Cu-catalyzed addition of carbon nucleophiles to vinylidene cyclopropanes was reported.

Cu-Catalyzed Regio- and Stereodivergent Chemoselective sp/sp 1,3- and 1,4-Diborylations of CF3-Containing 1,3-Enynes

“…After fine-tuning these conditions (see Table S14), a series of homopropargylic boronates 5 were obtained first under Condition D (Figure 5A), which are a series of important synthetic intermediates. 46 In general, the reaction demonstrates good compatibility with electron-neutral, electron-deficient, and electron-rich groups in medium to good yields (5a-5i). Subsequently, an array of homoallenyl boronates 6 were delivered under Condition E (Figure 5B); of note, compounds 6 are privileged structural scaffolds in agrochemicals, bioactive molecules as well as functional materials.…”

An efficient silica scale inhibiting strategy for geothermal systems: Combination of cationic and anionic polymers

“…Therefore, the ability of scale inhibitors to chelate Ca 2+ is crucial for their scale inhibition efficiency. To determine the chelation ability, we employed the method outlined by Chen et al 27 In this method, test scale inhibitors (5 g) were dissolved in water and made up to a total volume of 500 mL, respectively. Next, the ammonia‐ammonium chloride buffers (10 mL) were added into 100 mL of the several aforementioned solutions, and the pH was adjusted to 10.…”