Tandem Directed Lithiations of N-Boc-1,2-dihydropyridines toward Highly Functionalized 2,3-Dihydro-4-pyridones
摘要:
Sequential tandem directed lithiations of an N-Boc-4-methoxy-1,2-dihydropyridine have been achieved, leading to C-5,C-6 disubstituted dihydropyridones on acidic workup. The chlorine atom of the dihydropyridone products can in turn be substituted giving rise to diverse substituents at C-6.
Tandem Directed Lithiations of N-Boc-1,2-dihydropyridines toward Highly Functionalized 2,3-Dihydro-4-pyridones
摘要:
Sequential tandem directed lithiations of an N-Boc-4-methoxy-1,2-dihydropyridine have been achieved, leading to C-5,C-6 disubstituted dihydropyridones on acidic workup. The chlorine atom of the dihydropyridone products can in turn be substituted giving rise to diverse substituents at C-6.
Model Studies toward the Total Synthesis of the <i>Lycopodium </i>Alkaloid Spirolucidine
作者:Daniel L. Comins、Alfred L. Williams
DOI:10.1021/ol016556o
日期:2001.10.1
[reaction: see text] A strategy for the synthesis of the spirocyclic core of spirolucidine was explored through a modelstudy. The diene 4a was prepared and photolyzed to give the desired [2 + 2] photoadduct 17 containing the correct relative stereochemistry corresponding to spirolucidine.
Tandem Directed Lithiations of <i>N</i>-Boc-1,2-dihydropyridines toward Highly Functionalized 2,3-Dihydro-4-pyridones
作者:Damian W. Young、Daniel L. Comins
DOI:10.1021/ol052313a
日期:2005.12.1
Sequential tandem directed lithiations of an N-Boc-4-methoxy-1,2-dihydropyridine have been achieved, leading to C-5,C-6 disubstituted dihydropyridones on acidic workup. The chlorine atom of the dihydropyridone products can in turn be substituted giving rise to diverse substituents at C-6.