The domino blocks: a simple solution for parallel solid-phase organic synthesis.

The domino block is a reaction block for manual and semi-automatic parallel solid-phase organic synthesis that simplifies liquid exchange and integrates common synthetic steps. The domino block consists of enclosed reaction vessels, polypropylene syringes, attached to a manifold that clamps the syringes and connects them to a common port. Liquid is removed from the closed reaction vessels by vacuum connected to the common port. The vacuum formed inside each reaction vessel is subsequently used to draw fresh solvent or reagent into each reaction vessel.