Palladium-Catalyzed Double-Decarboxylative Addition to Pyrones: Synthesis of Conjugated Dienoic Esters
作者:Tapan Maji、Jon A. Tunge
DOI:10.1021/acs.orglett.5b02308
日期:2015.10.2
protocol has been developed utilizing pyrone as a C4 synthon. This palladium-catalyzed transformation difunctionalizes the pyrone moiety by in situ generation and activation of both the electrophile and nucleophile via a double decarboxylation pathway. Ultimately, allyl carbonates react smoothly with 2-carboxypyrone under mild reaction conditions to generate synthetically useful acyclic dienoic esters
Synthesis of <i>N</i>-alkoxycarbonyl Pyrroles from <i>O</i>-Substituted Carbamates: A Synthetically Enabling Pyrrole Protection Strategy
作者:Jodie L. Hann、Catherine L. Lyall、Gabriele Kociok-Köhn、Simon E. Lewis
DOI:10.1021/acs.joc.3c01257
日期:2023.10.6
5-dimethoxytetrahydrofuran gives N-alkoxycarbonyl pyrroles in a single step and in good yield. By this method, several common amine protecting groups can be introduced on the pyrrole nitrogen. With the exception of N-Boc, N-alkoxycarbonyl groups have seen only minimal use for protection of the pyrrole nitrogen to date. Here, we show that N-alkoxycarbonyl protection can endow pyrrole with distinct reactivity in comparison
NOVEL ADDUCT COMPOUND, METHODS FOR PURIFICATION AND PREPARATION OF FUSED POLYCYCLIC AROMATIC COMPOUND, SOLUTION FOR FORMATION OF ORGANIC SEMICONDUCTOR FILM, AND NOVEL -DIKETONE COMPOUND
申请人:Teijin Limited
公开号:EP2471796A1
公开(公告)日:2012-07-04
Provided are a novel adduct compound and a novel α-diketone compound, from which organic semiconductor layers consisting of a fused polycyclic aromatic compound can be formed by a solution method, said solution method being generally easier than a deposition method. Also provided are a method for the purification of the adduct compound, and a solution for the formation of organic semiconductor film, which contains the adduct compound. The adduct compound has a structure wherein a compound having a double bond is added in an eliminable state to a fused polycyclic aromatic compound of general formula (I): Ar1Ar2Ar3 (I), while the α-diketone compound has a structure wherein a compound having a double bond is added in an eliminable state to a fused polycyclic aromatic compound. The fused polycyclic aromatic compound is dinaphthothienothiophene or the like, while the compound having a double bond is hexachlorocyclopentadiene or the like. In general formula (I), Ar1, Ar2 and Ar3 are each as defined in the description.
NOVEL ADDUCT COMPOUND, SOLUTION FOR FORMATION OF ORGANIC SEMICONDUCTOR FILM, METHOD FOR PRODUCING SAID SEMICONDUCTOR FILM AND METHOD FOR SYNTHESIZING SAID ADDUCT COMPOUND