Synthesis of N-Substituted (Z)-3-Arylbenzo[c]thiophen-1(3H)-imines by the Reaction of 1-[Aryl(methoxy)methyl]-2-lithiobenzenes with Isothiocyanates Followed by Acid-Mediated Cyclization
摘要:
A simple procedure for the preparation of N-substituted (Z)-3-arylbenzo[c]thiophen-1(3H)-imines has been developed. Thus, bromine/lithium exchange between 1-[aryl(methoxy)methyl]-2-bromobenzenes and butyllithium, followed by reaction of the resulting 1-[aryl(methoxy)methyl]-2-lithiobenzenes with aliphatic and aromatic isothiocyanates, yields the corresponding N-substituted 2-[aryl(methoxy)methyl]benzothioamides. These were treated with concentrated hydrobromic acid to give the desired products.
Synthesis of N-Substituted (Z)-3-Arylbenzo[c]thiophen-1(3H)-imines by the Reaction of 1-[Aryl(methoxy)methyl]-2-lithiobenzenes with Isothiocyanates Followed by Acid-Mediated Cyclization
摘要:
A simple procedure for the preparation of N-substituted (Z)-3-arylbenzo[c]thiophen-1(3H)-imines has been developed. Thus, bromine/lithium exchange between 1-[aryl(methoxy)methyl]-2-bromobenzenes and butyllithium, followed by reaction of the resulting 1-[aryl(methoxy)methyl]-2-lithiobenzenes with aliphatic and aromatic isothiocyanates, yields the corresponding N-substituted 2-[aryl(methoxy)methyl]benzothioamides. These were treated with concentrated hydrobromic acid to give the desired products.
Synthesis of Substituted Biaryls through Gold-Catalyzed Petasis-Ferrier Rearrangement of Propargyl Ethers
作者:Kamalkishore Pati、Igor V. Alabugin
DOI:10.1002/ejoc.201402469
日期:2014.7
Au-catalyzed cycloisomerization of aryl propargylethers provides controlled transition from alkyne to carbonyl chemistry followed up by a Petasis–Ferrierrearrangement/aromatization cascade leading to substitutedbiaryls with functionalized naphthalene cores.
A convenient method for the synthesis of N,N-disubstituted 1-aryl-1,3-dihydro-2H-isoindole-2-carbothioamides starting from 2-[aryl(methoxy)methyl]phenyl bromides is described. Thus, the reaction of 1-[aryl(methoxy)methyl]-2-(isothiocyanatomethyl)benzenes, derived from the starting materials by an easily operated five-step sequence under mild conditions, with secondary amines provides the corresponding thiourea derivatives, which cyclize on treatment with methanesulfonic acid to afford the desired products.