Simplicial localization of monoidal structures, and a non-linear version of Deligne's conjecture
arXiv:math/0304442
Abstract
We show that if $(M,\tensor,I)$ is a monoidal model category then $\REnd_M(I)$ is a (weak) 2-monoid in $\sSet$. This applies in particular when is the category of -bimodules over a simplicial monoid : the derived endomorphisms of then form its Hochschild cohomology, which therefore becomes a simplicial 2-monoid.
9 pages, LaTeX; some references added