Under　the　catalysis　of　Rh-2(OAc)(4)　(10　mol%)　and　binapbisphosphine　ligand　(+/-)-L3　(20　mol%)　in　DCE　at　80　degrees　C,　the　cascade　cyclization　of　diazoimides　with　alkylidenepyrazolones　underwent　stereoselectively　(dr　＞　20:1),　affording　pyrazole-fused　oxa-bridged　oxazocines　in　reasonable　chemical　yields.　The　chemical　structure　and　relative　configuration　of　title　products　were　firmly　identified　by　X-ray　diffraction　analysis.