Workable Synthetic Route to Functionalized 1,6-Benzodiazocines

The addition of elemental bromine dissolved in CH(2)Cl(2) to para-disubstituted benzodiazocines where X is the same (H, CH(3), Br, OMe, NO(2)) or a different substituent as X and Y (CH(3), Br; OMe, NO(2)) has been found to proceed in most cases with competition between two pathways. While conventional trans-1,2-addition operates predominantly, electron-releasing groups also foster a ring-contraction process with ultimate 1,3-positioning of the pair of bromine atoms. The observed regio- and stereoselectivities, confirmed where necessary by X-ray crystallographic analysis, establish the capability of sulfonamide nitrogen centers to engage in neighboring group participation.

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Workable Synthetic Route to Functionalized 1,6-Benzodiazocines

Cited by 3 publications

References 18 publications

ChemInform Abstract: Workable Synthetic Routes to Functionalized 1,6‐Benzodiazocines.

ChemInform Abstract: Workable Synthetic Routes to Functionalized 1,6‐Benzodiazocines.

A ring-closing metathesis approach to eight-membered benzannelated scaffolds and subsequent internal alkene isomerizations

Effect of Sulfonyl Protecting Groups on the Neighboring Group Participation Ability of Sulfonamido Nitrogen

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