| abstract |
A compound of the formula (1): n n nwherein R 11 represents an alkyl group, an alkoxy group, a halogen atom, a cyano group, or a nitro group; n 11 is an integer of 0 to 4; R 21 and R 31 are a hydrogen atom, an alkyl group, a cycloalkyl group, an aromatic group, or a heteroaromatic group; or R 21 and R 31 together form a condensed ring consisting of aromatic rings or heteroaromatic rings; and Ar is selected from the groups consisting of groups represented by the following formulae: n nand a methylstyryl compound for producing the same, the production methods thereof and an organic electroluminescent element having the compound. |