Max Pacioretty, Dale Weise, Brendan Gallagher and David Desharnais scored the goals with Tomas Plekanec providing two assists while Carey Price made 31 saves on Thursday.
The Ottawa Senators are just two points behind Boston for the second wild card into the Stanley Cup playoffs after beating the Bruins 6-4.
In a topsy-turvy encounter, Torey Krug forced overtime with a late leveller for Boston at the Canadian Tire Centre, but Bobby Ryan restored the Senators’ lead before Kyle Turris put the result beyond doubt on 19:41.
Also in the hunt for a playoff berth are the San Jose Sharks, who dealt the Toronto Maple Leafs a 4-1 loss at Air Canada Centre.
The Florida Panthers downed the Detroit Red Wings 3-1 thanks to 25 saves from Roberto Luongo while rookie Johnny Gaudreau had a goal and two assists in the Calgary Flames’ 4-1 victory over the Philadelphia Flyers.
Alex Ovechkin scored twice in the Washington Capitals’ 3-2 win against the Minnesota Wild, the Dallas Stars beat the Pittsburgh Penguins 2-1 and the Winnipeg Jets were victorious by the same scoreline against the St Louis Blues.
Elsewhere, the Colorado Avalanches downed the Arizona Coyotes 5-2 and the Columbus Blue Jackets saw off the Vancouver Canucks 6-2.