5973-20-6Relevant academic research and scientific papers
Scaffold hopping via a transannular rearrangement-encompassing cascade
Vrijdag, Johannes L.,Van Den Bogaert, An M.,De Borggraeve, Wim M.
supporting information, p. 1052 - 1055 (2013/04/10)
A novel reaction cascade for converting benzodiazepinediones into oxazoloquinolinones using carboxylic acid anhydrides in the presence of base has been developed using flow methods. Products are obtained in yields up to 98%.
A novel solid-phase synthetic method for 1,4-benzodiazepine-2,5-dione derivatives
Jeon, Moon-Kook,Kwon, Jeong-Jin,Kim, Myung-Su,Gong, Young-Dae
scheme or table, p. 1651 - 1656 (2009/04/07)
Utilizing polymer-bound anthranilic acid derivatives 1, we were able to obtain the 1,4-benzodiazepine-2,5-dione derivatives 3 (R3 = H, R 4 = H, MeO, Cl) through an unprecedented reaction sequence, reductive alkylation-N-protected amino acid coupling-deprotective cyclization, in 28-71% five-step overall isolated yields and 95-99% purities from Wang resin 4. Applying the novel protocol to the resin 2, the 7-benzamido-1,4-benzodiazepine- 2,5-dione derivatives 3 (R1 = Bn, R4 = 7-BzNH) could be obtained in 19-42% seven- or eight-step overall isolated yields and 92-98% purities from AMEBA resin 7. Thieme Stuttgart.
A Versatile Synthesis of 3H-1(H),4(H)-Benzodiazepin-2,5-diones
Mohiuddin, G.,Reddy, P. S. N.,Ahmed, Khalil,Ratnam, C. V.
, p. 905 - 907 (2007/10/02)
Reaction of isatoic anhydrides (1) and α-amino acids (2) in glacial acetic acid under reflux gave 3H-1(H),4(H)-benzodiazepin-2,5-diones (3) in good yields.These compounds have been characterised by UV, IR, mass, PMR and 13C-NMR spectra.
