Alkenes are important primary chemicals for supporting our daily life from domestic utilities to off-the-shelve drugs. Internal and monosubstituted alkenes preparation technologies are now practicing in modern industry at a large scale, however, further potentials may possibly bounded by the availability of low cost synthetic methodology to access new derivatives with better environmental issues awareness. This book begins with highlighting the key former distinguish achievements in the area of Ni-H chemistry with olefins, follows by providing rationale on how we come up a new idea that gives asymmetric terminal disubstituted olefins in a catalytic and greener way, how we overrides several key existing problems in the field and relieves the bottleneck situation between the chemical feedstocks and large varieties of value-adding olefin transformations. This book closes with detailing technical procedures for readers to pursue the chemistry easily. The presented conceptual advance and exciting development should be useful to R & D professionals in Petroleum Industry, Polymers and Fine Chemicals Companies or those who plan to use geminal olefins for subsequent synthetic applications.