  The leading twist parametrization of dipion mass distribution in hard
exclusive reactions is proposed. Its parameters are related to quark
distributions (usual and skewed) in the pion and to distributions amplitudes of
mesons ($\pi$, $\rho$, etc.). We show that measurements of the shape of dipion
mass distribution in hard exclusie reactions can give important information
about partonic structure of the pion. The expression for the amplitude of the
reaction $\gamma^*\gamma\to \pi\pi$ near the threshold in terms of singlet
quark distribution in the pion is presented.
