Facile synthesis of mono and dibenzo N,N'‐disubstituted diaza 18‐crown‐6 derivatives

This study represents a facile synthesis of building blocks ( 1–3 ) of crown ethers and amine precoursers ( 4a‐d ). The study also involves synthesis of mono and dibenzo N, N‐disubstituted diaza 18‐crown‐6 derivatives with high yield without chromatographic purification and high vacuum distillation. The complex ability of host the ethers was evaluated in terms of structural modification.