Patent ID: 6616990
Filing Date: 2003-09-09
Classification: C07D,C09K

Abstract:
A chiral compound of the general formula I or a diastereomer thereof, where R1 is [Pâ€”Y1â€”(A1)mâ€”Y2â€”]qMâ€”Y3â€”(A2)nâ€”Y4â€”, and R2 and R3 are each, independently of one another and independently of R1, [Pâ€”Y1â€”(A1)mâ€”Y2â€”]qMâ€”Y3â€”(A2)nâ€”Y4â€²â€”, where A1 and A2 are each a spacer having from one to 30 carbon atoms, M is a mesogenic group, Y1, Y2, Y3 and Y4 are each a chemical single bond, â€”Oâ€”, â€”Sâ€”, â€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”COâ€”N(R)â€”, â€”(R)Nâ€”COâ€”, â€”Oâ€”COâ€”Oâ€”, â€”Oâ€”COâ€”N(R)â€”, â€”(R)Nâ€”COâ€”Oâ€” or â€”(R)Nâ€”COâ€”N(R)â€”, Y4â€² is â€”Oâ€”, â€”Oâ€”COâ€”, â€”Oâ€”COâ€”Oâ€” or â€”Oâ€”COâ€”N(R)â€”, R is hydrogen or C1-C4-alkyl, P is hydrogen, C1-C12-alkyl, a polymerizable group or a group suitable for polymerization or a radical having a polymerizable group or a group suitable for polymerization, m and n are each 0 or 1, and q is 1, 2 or 3, where A1, A2, Y1, Y2, Y3, Y4, Y4â€², M and P and the indices m, n and q of R1 to R3 can be identical or different, and R2 and R3 are attached to the 1,3-dioxane skeleton via the oxygen atom of Y4â€², with the proviso that at least one of the radicals Y, in each case adjacent to A, is a chemical bond if one or both of the indices m and n is/are 0.