New thermo and photochromic 10-methylspiro{dibenzo[b,f][1,4]oxazepino-11,3′-3H-naphtho[2,1-b]-1,4-oxazine}
Abstract
The synthesis of the new 10-methylspiro{dibenzo[b,f][1,4]oxazepino-11,3′-3H-naphtho[2,1-b]-1,4-oxazine 3 allows the influence of conformational factors on its thermal and photochemical behaviour to be studied.