Abstract
Reaction of the 7-(methylsulfonyl)-1H-imidazo[4, 5-d]pyridazine (3) with 1-(N, N-diethylamino)-1-propyne (2) resulted in the formationo f the benzimidazole (5) and the 3H-imidazo[4, 5-d][1, 2]diazocine (4) through the [4+2]- and [2+2]-cycloadducts. Similarly, reaction of the 7-(methylsulfonyl)-(9) and the 7-cyano-1H-pyrazolo[3, 4-d]pyridazines (10) with 2 gave the corresponding indazoles (14, 16) and the 1H-pyrazolo[3, 4-d][1, 2]diazocines (15, 17). A similar reaction was also found to proceed between 7-(methylsulfonyl)-1H-1, 2, 3-triazolo[4, 5-d]pyridazine (18) and 2, affording the corresponding benzotriazole (20) and the 3H-1, 2, 3-triazolo[4, 5-d][1, 2]diazocine (19).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
