Fang Xie, Songjie Yu, Zisong Qi, Xingwei Li, Nitrone Directing Groups in Rhodium(III)‐Catalyzed C−H Activation of Arenes: 1,3‐Dipoles versus Traceless Directing Groups, Angewandte Chemie International Edition, 10.1002/anie.201609658, 55, 49, (15351-15355), (2016).

Directed Meta-Selective CH Bond Functionalizations In 2011, Larrosa and co-workers disclosed a method for formal meta-C H arylation using carboxylic acids as a traceless ortho-directing group (Scheme 8.43) with aryl iodides as coupling partners, which was compatible with a wide range of meta-substituents (Scheme 8.44). 84 Importantly, this tandem directed C H arylation/protodecarboxylation Cu(II)‐Mediated C−C/C−O Bond Formation via C−H/C−C Bond Oct 30, 2019 Catalytic Reductive ortho-C–H Silylation of Phenols with

(16) Traceless Directing-Group Strategy in the Ru-Catalyzed Formal [3 + 3] Annulation of Anilines with Allyl Alcohols: A One-Pot Domino Approach for the Synthesis of Quinolines.

The catalytic removal of a methoxy group on an aromatic ring allows this group to be used as a traceless activating and directing group for aromatic functionalization reactions. Although several US20160145276A1 - Traceless directing groups in radical The present disclosure is directed to a traceless directing group in a radical cascade. The chemo- and regioselectivity of the initial attack in skipped oligoalkynes is controlled by a propargyl alkoxy moiety. Radical translocations lead to the boomerang return of radical center to the site of initial attack where it assists to the elimination of the directing functionality via β-scission in

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A tethered alkene functionality can be used as a traceless directing group for a zirconium catalyzed reductive cleavage of C sp 3 and C sp 2 carbon-heteroatom bonds, including C-O, C-N, and C-S bonds. The reaction is especially useful for cleavage of homoallylic ethers and the removal of terminal allyl and propargyl groups. A Traceless Directing Group for C-H Borylation | Request PDF Directing group, removable directing group, traceless directing group and transient directing group (TDG) were successively used to improve the efficiency. For further development of greener and Traceless Directing Group for Stereospecific Nickel Stereospecific nickel-catalyzed cross-coupling reactions of benzylic 2-methoxyethyl ethers are reported for the preparation of enantioenriched 1,1-diarylethanes. The 2-methoxyethyl ether serves as a traceless directing group that accelerates cross-coupling. RhIII-Catalyzed site-selective amidation with nitrone as a