A new process for the regiocontrolled synthesis of substituted catechols and other 1,2-dioxygenated aromatics: conjugate addition of vinyl-, aryl-, and heteroarylcopper reagents to cyclobutenediones followed by thermal rearrangement
作者:Angela Gurski、Lanny S. Liebskind
DOI:10.1021/ja00067a027
日期:1993.7
A general method for the synthesis of substituted catechol derivatives has been developed utilizing the 1,4-addition of vinyl-, aryl-, and heteroarylcuprates to cyclobutendiones followed by thermal rearrangement. In situ protection with (methoxyethoxy)methyl chloride of the enolate derived from addition of the cuprate yields 2-alkoxy-4-R unsat'd -2-cyclobutenones, which rearrange thermally to substituted
An improved method for the synthesis of substituted cyclobutenediones
作者:Lanny S. Liebeskind、Richard W. Fengl、Kevin R. Wirtz、Thomas T. Shawe
DOI:10.1021/jo00246a017
日期:1988.5
LIEBESKIND, LANNY S.;FENGL, RICHARD W.;WIRTZ, KEVIN R.;SHAWE, THOMAS T., J. ORG. CHEM., 53,(1988) N 11, C. 2482-2488
作者:LIEBESKIND, LANNY S.、FENGL, RICHARD W.、WIRTZ, KEVIN R.、SHAWE, THOMAS T.
DOI:——
日期:——
Cyclobutenediones as precursors to quinones and cyclopentenones
作者:Lanny S. Liebeskind
DOI:10.1016/s0040-4020(01)80131-9
日期:1989.1
New Convenient Methods for the Preparation of Pendant Chain Cyclobutadiene Tricarbonyliron Complexes
作者:Christopher M. Adams、John E. Schemenaur、Ellen S. Crawford、Scott A. Joslin
DOI:10.1080/00397919208021603
日期:1992.5
synthesis of precursors to pendant chain cyclobutadiene metal complexes. Facile reduction of the mono and disubstituted 1,2-cyclobutenediones gave cyclobutenediols which were converted to their corresponding trans dibromides with PBr3. Reduction and complexation using Fe2(CO)9 formed the pendant chain cyclobutadiene tricarbonylironcomplexes in good yields.