Synthesis of New Quaternary Ammonium Salts with a Terpene Function and Evaluation of their Fungicidal and Herbicidal Activities
作者:Krzysztof Żelechowski、Mirosław Gucma、W. Marek Gołębiewski、Maria Krawczyk、Alicja Katarzyna Michalczyk
DOI:10.17344/acsi.2019.5580
日期:——
new quaternaryammoniumsalts (QASs) containing a terpenoid moiety derived from perillyl alcohol, citronellol, and geraniol was synthesized. Structures of all novel compounds were confirmed by spectral methods and elemental analyses. Fungicidal activity of the obtained compounds against six plant pathogens, against four fungi destroying wood and technical materials as well as herbicidal activity against
Electrophile-Controlled Regiodivergent Palladium-Catalyzed Imidoylative Spirocyclization of Cyclic Alkenes
作者:Shumin Ding、Yue Pu、Jiao Lin、Haixia Zhao、Qiang Tang、Jian Wang
DOI:10.1021/acs.orglett.4c00181
日期:2024.3.8
spirocyclization of isocyano cycloalkenes has been developed, offering efficient and selective approaches toward spirocyclic hydropyrrole scaffolds. 2-Azaspiro-1,7-dienes could be obtained through a “chain-walking” process with aryl/vinyl iodides as electrophiles, while the normal Heck product 2-azaspiro-1,6-dienes were selectively generated when aryl triflates were used as the coupling partner of isocyanides
One-Pot Synthesis of 1-Iodoalkynes and Trisubstituted Alkenes from Benzylic and Allylic Bromides
作者:Guillaume Pelletier、Sharon Lie、James J. Mousseau、André B. Charette
DOI:10.1021/ol302544s
日期:2012.11.2
1-Iodoalkynes are formed in moderate to high yields from readily accessible benzylic and allylic alkyl bromides by a one-pot homologation/double elimination procedure with iodoform (CHI3). The developed conditions include facile purification and avoid the use of an excess of triphenylphosphine (PPh3), as described in classical Corey-Fuchs iodoalkynylation conditions. Replacing CHI3 with CHI2CI allows the isolation of the corresponding gem-(2)-chloro-(E)-iodoalkene in good yield and stereoselectivity. Moreover, the use of benzhydryl bromides as nucleophiles enables the synthesis of trisubstituted alkenes under similar reaction conditions.