The 4-[(E)-3-arylprop-2-enyl]phenols are omnipresent scaffolds and constitute natural products and biologically significant compounds. Obtusastyrene and obtustyrene are two such phenolic-based natural products isolated from Dalbergia Retusa. Developing strategies based on...

Bent-shaped thienoacenes show promise as next-generation organic semiconductors. Here we present the synthesis of an air-stable, pure and easily scalable thiophene precursor 2,5-distannylated-3,4-dialkyne thiophene starting from 3,4-dialkyne thiophene in quantitative...

The nucleophilic substitution on 3-substituted 2-methoxytropones to form azulenes is dependent on the nucleophile and base employed. With bulkier nucleophiles (ethyl/methyl cyanoacetate), the reaction proceeds with the abnormal nucleophilic substitution irrespective of the base and with smaller nucleophiles (malononitrile), the reaction follows base-dependent normal and abnormal nucleophilic substitution. Thus, the methodologies are developed to selectively obtain 4-and 5-substituted azulenes based on the nature of bases and nucleophiles employed.

Azulene is a non-alternant non-benzenoid aromatic hydrocarbon with an inherent dipole moment of 1.08 D providing azulene-containing conjugated systems with a narrow HOMO-LUMO gap. Here we discuss the design, synthesis...