claim: Hermit crabs are trilobites.
evidence: In organic chemistry , a vinyl iodide functional group -LRB- also known as iodoalkenes -RRB- is any alkene with an iodide substituent directly bonded to one of the alkene carbons -LRB- sp2 -RRB- .. organic chemistry. organic chemistry. alkene. alkene. iodide. iodide. Vinyl iodides are versatile molecules that serve as important building blocks and precursors in organic synthesis .. They are commonly used in carbon-carbon forming reactions in transition-metal catalyzed cross-coupling reactions , such as Heck reaction , Sonogashira coupling , and Suzuki coupling .. coupling reactions. coupling reactions. Heck reaction. Heck reaction. Sonogashira coupling. Sonogashira coupling. Suzuki coupling. Suzuki coupling. Synthesis of well-defined geometry or complexity vinyl iodide is important in stereoselective synthesis of natural products and drugs .. iodide. iodide. stereoselective. stereoselective. natural products. natural products. drugs. drugs